Dosing & Uses
Dosage Forms & Strengths
tablet
- 100mg
- 250mg
Dosage should be individualized based upon patient's response
Type 2 Diabetes
Administer 30 minutes before meal to improve absorption
Middle-aged stable diabetic
- 250 mg/day PO initially; may increase or decrease PRN by 50-125 mg/day at 3- to 5-day intervals
Older patients
- 100-125 mg/day PO initially; may increase or decrease PRN by 50-125 mg/day at 3- to 5-day intervals
Maintenance dose
- 100-250 mg/day; a higher dose of 500 mg/day may be required in severe diabetes; should avoid doses >750 mg/day
Renal Impairment
CrCl <50 mL/minute: Avoid use
CrCl >50 mL/minute: Monitor therapy closely; initial and maintenance dosing should be conservative to avoid hypoglycemia
Hepatic Impairment
Use lower initial and maintenance dose in liver impairment; chlorpropamide undergoes extensive hepatic metabolism
Other Indications & Uses
Off-label: Neurogenic diabetes insipidus
Safety and efficacy not established
Not drug of choice in elderly; increased risk of hypoglycemia and drug interactions because of long half-life
Type 2 Diabetes
100-125 mg PO qDay initially; may increase or decrease PRN by 50-125 mg/day at 3-5 day intervals
Interactions
Interaction Checker
No Results
Contraindicated
Serious - Use Alternative
Significant - Monitor Closely
Minor
Contraindicated (1)
- dronabinol
chlorpropamide increases toxicity of dronabinol by aldehyde dehydrogenase inhibition. Contraindicated. Dronabinol oral solution (Syndros) contains 50% (w/w) dehydrated alcohol 5.5% (w/w) propylene glycol, which can produce disulfiramlike reactions if coadministered with chlorpropamide. Discontinue chlorpropamide at least 14 days before starting dronabinol solution and do not administer chlorpropamide within 7 days of completing treatment with dronabinol solution.
Serious - Use Alternative (8)
- aminolevulinic acid oral
aminolevulinic acid oral, chlorpropamide. Either increases toxicity of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Avoid administering other phototoxic drugs with aminolevulinic acid oral for 24 hr during perioperative period.
- aminolevulinic acid topical
chlorpropamide increases toxicity of aminolevulinic acid topical by pharmacodynamic synergism. Avoid or Use Alternate Drug. Coadministration of photosensitizing drugs may enhance the phototoxic reaction to photodynamic therapy with aminolevulinic acid.
- ethanol
ethanol, chlorpropamide. Other (see comment). Contraindicated. Comment: Excessive EtOH consumption may alter glycemic control. Some sulfonylureas may produce a disulfiram like rxn.
- inotuzumab
inotuzumab and chlorpropamide both increase QTc interval. Avoid or Use Alternate Drug. If unable to avoid concomitant use, obtain ECGs and electrolytes before and after initiation of any drug known to prolong QTc, and periodically monitor as clinically indicated during treatment.
- ivosidenib
ivosidenib will decrease the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Avoid or Use Alternate Drug. Avoid coadministration of sensitive CYP2C9 substrates with ivosidenib or replace with alternate therapies. If coadministration is unavoidable, monitor patients for loss of therapeutic effect of these drugs.
- lumacaftor/ivacaftor
lumacaftor/ivacaftor will decrease the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Avoid or Use Alternate Drug. Sulfonylureas are CYP2C9 substrates. Lumacaftor/ivacaftor has the potential to induce CYP2C9.
- methyl aminolevulinate
chlorpropamide, methyl aminolevulinate. Either increases toxicity of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Each drug may increase the photosensitizing effect of the other.
- ribociclib
ribociclib and chlorpropamide both increase QTc interval. Avoid or Use Alternate Drug.
Monitor Closely (157)
- aceclofenac
aceclofenac increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- acemetacin
acemetacin increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- albiglutide
albiglutide, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Serious hypoglycemia may occur when insulin secretagogues and GLP-1 agonists are concurrently administered. Consider lowering the dose of insulin secretagogue to reduce the risk of hypoglycemia. .
- alogliptin
alogliptin, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration of alogliptin with insulin and/or insulin secretagogues (eg, sulfonylureas, meglitinide derivatives) may increase risk for hypoglycemia; may require lower dose of insulin or insulin secretagogue .
- alpelisib
alpelisib will decrease the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Modify Therapy/Monitor Closely.
- apalutamide
apalutamide will decrease the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. Coadministration of apalutamide, a weak CYP2C9 inducer, with drugs that are CYP2C9 substrates can result in lower exposure to these medications. Evaluate for loss of therapeutic effect if medication must be coadministered.
- aripiprazole
aripiprazole, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- asenapine
asenapine, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- aspirin
aspirin increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- aspirin rectal
aspirin rectal increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- aspirin/citric acid/sodium bicarbonate
aspirin/citric acid/sodium bicarbonate increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- atazanavir
atazanavir decreases effects of chlorpropamide by Other (see comment). Use Caution/Monitor. Comment: Reports of hyperglycemia due to insulin resistance with protease inhibitors. .
- benazepril
benazepril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- bexagliflozin
bexagliflozin, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Consider a lower dose of insulin secretagogue to avoid hypoglycemia when coadministered with bexagliflozin.
- bexarotene
bexarotene increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Based on the mechanism of action, bexarotene capsules may increase the action of insulin enhancing agents, resulting in hypoglycemia. Hypoglycemia has not been associated with bexarotene monotherapy.
- bitter melon
bitter melon increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Risk of hypoglycemia.
- canagliflozin
chlorpropamide, canagliflozin. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Consider a lower dose of insulin or insulin secretagogue to avoid hypoglycemia when coadministered with canagliflozin.
- cannabidiol
cannabidiol will increase the level or effect of chlorpropamide by decreasing metabolism. Modify Therapy/Monitor Closely. Cannabidiol may potentially inhibit CYP2C9 activity. Consider reducing the dose when concomitantly using CYP2C9 substrates.
- captopril
captopril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- celecoxib
celecoxib increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- choline magnesium trisalicylate
choline magnesium trisalicylate increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- cinnamon
cinnamon increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Potential for hypoglycemia.
- ciprofibrate
ciprofibrate increases effects of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Hypoglycemia; increased risk in hypoalbuminemia.
- ciprofloxacin
ciprofloxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Careful monitoring of blood glucose is recommended when quinolones and antidiabetic agents are coadministered. Hyperglycemia and hypoglycemia have been reported in patients treated concomitantly with quinolones and antidiabetic agent.
- clarithromycin
clarithromycin increases levels of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Risk of hypoglycemia.
- clotrimazole
clotrimazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- clozapine
clozapine, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- cyclosporine
chlorpropamide, cyclosporine. unknown mechanism. Use Caution/Monitor. Cyclosporine may decrease the effects of sulfonylureas. Sulfonylureas may increase the effects of cyclosporine.
- dapagliflozin
chlorpropamide, dapagliflozin. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Consider a lower dose of insulin or insulin secretagogue to avoid hypoglycemia when coadministered with dapagliflozin.
- darunavir
darunavir, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Darunavir may increase or decrease levels of chlorpropamide. Use alternatives if available. Reports of hyperglycemia due to insulin resistance with protease inhibitors. .
- deutetrabenazine
chlorpropamide and deutetrabenazine both increase QTc interval. Use Caution/Monitor. At the maximum recommended dose, deutetrabenazine does not prolong QT interval to a clinically relevant extent. Certain circumstances may increase risk of torsade de pointes and/or sudden death in association with drugs that prolong the QTc interval (eg, bradycardia, hypokalemia or hypomagnesemia, coadministration with other drugs that prolong QTc interval, presence of congenital QT prolongation).
- diclofenac
diclofenac increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- diflunisal
diflunisal increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- disopyramide
disopyramide increases effects of chlorpropamide by unspecified interaction mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- dulaglutide
dulaglutide, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- elvitegravir/cobicistat/emtricitabine/tenofovir DF
elvitegravir/cobicistat/emtricitabine/tenofovir DF decreases levels of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. Elvitegravir is a moderate CYP2C9 inducer.
- empagliflozin
empagliflozin, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Consider a lower dose of insulin or insulin secretagogue to avoid hypoglycemia when coadministered with SGLT2 inhibitors.
- enalapril
enalapril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- ertugliflozin
ertugliflozin, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Consider a lower dose of insulin or insulin secretagogue to avoid hypoglycemia when coadministered with ertugliflozin.
- etodolac
etodolac increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- exenatide injectable solution
exenatide injectable solution, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of hypoglycemia when exenatide is used in combination with agents that induce hypoglycemia. Consider lowering dose of sulfonylureas to reduce risk of hypoglycemia. .
- exenatide injectable suspension
exenatide injectable suspension, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of hypoglycemia when exenatide is used in combination with agents that induce hypoglycemia. Consider lowering dose of sulfonylureas to reduce risk of hypoglycemia.
- fenofibrate
fenofibrate increases effects of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Hypoglycemia; increased risk in hypoalbuminemia.
- fenofibrate micronized
fenofibrate micronized increases effects of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Hypoglycemia; increased risk in hypoalbuminemia.
- fenofibric acid
fenofibric acid increases effects of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Hypoglycemia; increased risk in hypoalbuminemia.
- fenoprofen
fenoprofen increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- fleroxacin
fleroxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Quinolone antibiotic administration may result in hyper- or hypoglycemia. Gatifloxacin is most likely to produce dysglycemia; moxifloxacin is least likely.
- fluconazole
fluconazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- fluoxetine
fluoxetine increases effects of chlorpropamide by unspecified interaction mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- flurbiprofen
flurbiprofen increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- fosamprenavir
fosamprenavir, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Fosamprenavir may increase or decrease levels of chlorpropamide. Use alternatives if available. Reports of hyperglycemia due to insulin resistance with protease inhibitors. .
- fosinopril
fosinopril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- gemfibrozil
gemfibrozil increases effects of chlorpropamide by plasma protein binding competition. Use Caution/Monitor. Hypoglycemia; increased risk in hypoalbuminemia.
- gemifloxacin
gemifloxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Quinolone antibiotic administration may result in hyper- or hypoglycemia. Gatifloxacin is most likely to produce dysglycemia; moxifloxacin is least likely.
- gemtuzumab
chlorpropamide and gemtuzumab both increase QTc interval. Use Caution/Monitor.
- ibuprofen
ibuprofen increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- ibuprofen IV
ibuprofen IV increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- iloperidone
iloperidone, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- imidapril
imidapril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- indomethacin
indomethacin increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- insulin aspart
chlorpropamide, insulin aspart. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin aspart protamine/insulin aspart
chlorpropamide, insulin aspart protamine/insulin aspart. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin degludec
chlorpropamide, insulin degludec. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin degludec/insulin aspart
chlorpropamide, insulin degludec/insulin aspart. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin detemir
chlorpropamide, insulin detemir. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin glargine
chlorpropamide, insulin glargine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin glulisine
chlorpropamide, insulin glulisine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin inhaled
chlorpropamide, insulin inhaled. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin isophane human/insulin regular human
chlorpropamide, insulin isophane human/insulin regular human. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin lispro
chlorpropamide, insulin lispro. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin lispro protamine/insulin lispro
chlorpropamide, insulin lispro protamine/insulin lispro. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin NPH
chlorpropamide, insulin NPH. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- insulin regular human
chlorpropamide, insulin regular human. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Antidiabetic agents are often used in combination; dosage adjustments may be required when initiating or discontinuing antidiabetic agents.
- isocarboxazid
isocarboxazid increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor.
- itraconazole
itraconazole will decrease the level or effect of chlorpropamide by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.
- ketoconazole
ketoconazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- ketoprofen
ketoprofen increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- ketorolac
ketorolac increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- ketorolac intranasal
ketorolac intranasal increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- ketotifen, ophthalmic
ketotifen, ophthalmic, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Combination may result in thrombocytopenia (rare). Monitor CBC.
- levofloxacin
levofloxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Quinolone antibiotic administration may result in hyper- or hypoglycemia. Gatifloxacin is most likely to produce dysglycemia; moxifloxacin is least likely.
- levoketoconazole
levoketoconazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- linagliptin
chlorpropamide, linagliptin. Other (see comment). Use Caution/Monitor. Comment: When linagliptin is used in combination with sulfonylureas, a lower dose of the sulfonylurea may be required to reduce risk of hypoglycemia.
- linezolid
linezolid increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor.
- liraglutide
liraglutide, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Serious hypoglycemia may occur when insulin secretagogues and GLP-1 agonists are concurrently administered. Consider lowering the dose of insulin secretagogue to reduce the risk of hypoglycemia. .
- lisinopril
lisinopril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- lixisenatide (DSC)
lixisenatide (DSC), chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Risk of hypoglycemia increased when coadministered with sulfonylureas. Sulfonylurea dosage reduction may be required.
- lofexidine
chlorpropamide and lofexidine both increase QTc interval. Use Caution/Monitor. ECG monitoring is recommended.
- lonapegsomatropin
lonapegsomatropin decreases effects of chlorpropamide by Other (see comment). Use Caution/Monitor. Comment: Closely monitor blood glucose when treated with antidiabetic agents. Lonapegsomatropin may decrease insulin sensitivity, particularly at higher doses. Patients with diabetes mellitus may require adjustment of their doses of insulin and/or other antihyperglycemic agents.
- lopinavir
lopinavir, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Lopinavir may increase or decrease levels of chlorpropamide. Reports of hyperglycemia due to insulin resistance with protease inhibitors. .
- lornoxicam
lornoxicam increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- lurasidone
lurasidone, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- marijuana
marijuana decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor.
- mecasermin
mecasermin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Additive hypoglycemic effects.
- meclofenamate
meclofenamate increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- mefenamic acid
mefenamic acid increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- meloxicam
meloxicam increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- methotrexate
chlorpropamide will increase the level or effect of methotrexate by acidic (anionic) drug competition for renal tubular clearance. Use Caution/Monitor. Methotrexate is partially bound to plasma proteins, and drugs that can displace methotrexate from these proteins, such as oral sulfonylureas, could cause methotrexate-induced toxicity.
- metreleptin
chlorpropamide, metreleptin. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration of metreleptin with insulin and/or insulin secretagogues (eg, sulfonylureas, meglitinide derivatives) may increase risk for hypoglycemia; may require lower dose of insulin or insulin secretagogue.
- miconazole vaginal
miconazole vaginal increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- moexipril
moexipril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- moxifloxacin
moxifloxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Quinolone antibiotic administration may result in hyper- or hypoglycemia. Gatifloxacin is most likely to produce dysglycemia; moxifloxacin is least likely.
- mycophenolate
chlorpropamide will increase the level or effect of mycophenolate by acidic (anionic) drug competition for renal tubular clearance. Use Caution/Monitor.
- nabumetone
nabumetone increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- nadolol
nadolol decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor. Non selective beta blockers may also mask the symptoms of hypoglycemia.
- naproxen
naproxen increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- nitisinone
nitisinone will increase the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. Nitisinone inhibits CYP2C9. Caution if CYP2C9 substrate coadministered, particularly those with a narrow therapeutic index.
- ofloxacin
ofloxacin increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Quinolone antibiotic administration may result in hyper- or hypoglycemia. Gatifloxacin is most likely to produce dysglycemia; moxifloxacin is least likely.
- olanzapine
olanzapine, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- opuntia ficus indica
opuntia ficus indica increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- oxaprozin
oxaprozin increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- paliperidone
paliperidone, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- parecoxib
parecoxib increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- peginterferon alfa 2b
peginterferon alfa 2b decreases levels of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. When patients are administered peginterferon alpha-2b with CYP2C9 substrates, the therapeutic effect of these drugs may be altered.
- perindopril
perindopril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- phenelzine
phenelzine increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor.
- pindolol
pindolol decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor. Non selective beta blockers may also mask the symptoms of hypoglycemia.
- piroxicam
piroxicam increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- pivmecillinam
pivmecillinam, chlorpropamide. Either increases levels of the other by decreasing renal clearance. Use Caution/Monitor.
- posaconazole
posaconazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- probenecid
chlorpropamide will increase the level or effect of probenecid by acidic (anionic) drug competition for renal tubular clearance. Use Caution/Monitor.
probenecid increases levels of chlorpropamide by unspecified interaction mechanism. Use Caution/Monitor. Risk of hypoglycemia. - propranolol
propranolol decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor. Non selective beta blockers may also mask the symptoms of hypoglycemia.
- quetiapine
quetiapine, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- quinapril
quinapril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- ramipril
ramipril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- rifabutin
rifabutin decreases levels of chlorpropamide by increasing metabolism. Use Caution/Monitor.
- rifampin
rifampin decreases levels of chlorpropamide by increasing metabolism. Use Caution/Monitor.
- rifapentine
rifapentine decreases levels of chlorpropamide by increasing metabolism. Use Caution/Monitor.
- risperidone
risperidone, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
- ritonavir
ritonavir, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Ritonavir may increase or decrease levels of chlorpropamide. Reports of hyperglycemia due to insulin resistance with protease inhibitors. .
- rucaparib
rucaparib will increase the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Modify Therapy/Monitor Closely. Adjust dosage of CYP2C9 substrates, if clinically indicated.
- salicylates (non-asa)
salicylates (non-asa) increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- salsalate
salsalate increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- selegiline
selegiline increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Serum glucose should be monitored closely when MAOIs are added to any regimen containing antidiabetic medications. Hypoglycemic effects may be increased.
- selegiline transdermal
selegiline transdermal increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor.
- semaglutide
semaglutide, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of insulin secretagogues with GLP-1 agonists may increase hypoglycemia risk. Lowering the insulin secretagogue dose may reduce hypoglycemia risk.
- shark cartilage
shark cartilage increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor. Theoretical interaction.
- somapacitan
somapacitan decreases effects of chlorpropamide by pharmacodynamic antagonism. Modify Therapy/Monitor Closely. Growth hormone products may decrease insulin sensitivity, particularly at higher doses. Antidiabetic agents may require dose adjustment after initiating somapacitan. .
- sparsentan
sparsentan will decrease the level or effect of chlorpropamide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. Sparsentan (a CYP2C9 inducer) decreases exposure of CYP2C9 substrates and reduces efficacy related to these substrates.
- sulfadiazine
sulfadiazine increases levels of chlorpropamide by plasma protein binding competition. Use Caution/Monitor.
- sulfamethoxazole
sulfamethoxazole increases levels of chlorpropamide by plasma protein binding competition. Use Caution/Monitor.
- sulfamethoxypyridazine
sulfamethoxypyridazine increases effects of chlorpropamide by unspecified interaction mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- sulfasalazine
sulfasalazine increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- sulfisoxazole
sulfisoxazole increases levels of chlorpropamide by plasma protein binding competition. Use Caution/Monitor.
- sulindac
sulindac increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- temocillin
temocillin, chlorpropamide. Either increases levels of the other by decreasing renal clearance. Use Caution/Monitor.
- ticarcillin
ticarcillin, chlorpropamide. Either increases levels of the other by decreasing renal clearance. Use Caution/Monitor.
- timolol
timolol decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor. Non selective beta blockers may also mask the symptoms of hypoglycemia.
- tolfenamic acid
tolfenamic acid increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- tolmetin
tolmetin increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor. Risk of hypoglycemia.
- trandolapril
trandolapril increases effects of chlorpropamide by pharmacodynamic synergism. Use Caution/Monitor.
- tranylcypromine
tranylcypromine increases effects of chlorpropamide by unknown mechanism. Use Caution/Monitor.
- triamcinolone acetonide injectable suspension
triamcinolone acetonide injectable suspension decreases effects of chlorpropamide by pharmacodynamic antagonism. Use Caution/Monitor. Corticosteroids may diminish hypoglycemic effect of antidiabetic agents. Monitor blood glucose levels carefully.
- voriconazole
voriconazole increases levels of chlorpropamide by decreasing metabolism. Use Caution/Monitor.
- warfarin
chlorpropamide, warfarin. Either increases effects of the other by receptor binding competition. Use Caution/Monitor. Monitor for decreased vitamin K antagonist effects (eg, decreased INR, thrombosis) when combined with metformin. Additionally, consider increased monitoring for hypoglycemia with this combination. Competitive inhibition of CYP2C9-mediated metabolism may also contribute to mechanism.
- xipamide
xipamide decreases levels of chlorpropamide by increasing renal clearance. Use Caution/Monitor.
- ziprasidone
ziprasidone, chlorpropamide. Other (see comment). Use Caution/Monitor. Comment: Atypical antipsychotics have been associated with hyperglycemia that may alter blood glucose control; monitor glucose levels closely.
Minor (126)
- aceclofenac
aceclofenac will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- acemetacin
acemetacin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- acyclovir
acyclovir will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- agrimony
agrimony increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- American ginseng
American ginseng increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- aminohippurate sodium
aminohippurate sodium will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- amitriptyline
amitriptyline increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- amoxapine
amoxapine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- anamu
anamu increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Theoretical interaction.
- aspirin
aspirin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
aspirin increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - aspirin rectal
aspirin rectal will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
aspirin rectal increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - aspirin/citric acid/sodium bicarbonate
aspirin/citric acid/sodium bicarbonate will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
aspirin/citric acid/sodium bicarbonate increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - balsalazide
balsalazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
balsalazide increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - bendroflumethiazide
bendroflumethiazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
bendroflumethiazide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - budesonide
budesonide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- cefadroxil
cefadroxil will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- cefamandole
cefamandole will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- cefotetan
cefotetan will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- cefpirome
cefpirome will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- celecoxib
celecoxib will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- cephalexin
cephalexin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- chloramphenicol
chloramphenicol increases levels of chlorpropamide by decreasing metabolism. Minor/Significance Unknown.
- chlorothiazide
chlorothiazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
chlorothiazide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - chlorthalidone
chlorthalidone will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
chlorthalidone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - choline magnesium trisalicylate
choline magnesium trisalicylate will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
choline magnesium trisalicylate increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - chromium
chromium increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- clarithromycin
clarithromycin increases levels of chlorpropamide by unknown mechanism. Minor/Significance Unknown. Risk of hepatotoxicity.
- clomipramine
clomipramine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- clonidine
clonidine decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Diminished symptoms of hypoglycemia.
clonidine, chlorpropamide. Other (see comment). Minor/Significance Unknown. Comment: Decreased symptoms of hypoglycemia. Mechanism: decreased hypoglycemia induced catecholamine production. - cornsilk
cornsilk increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Increased risk of hypoglycemia (theoretical interaction).
- cortisone
cortisone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- cyclopenthiazide
cyclopenthiazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
cyclopenthiazide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - damiana
damiana decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Theoretical interaction.
- danazol
danazol increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- deflazacort
deflazacort decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- desipramine
desipramine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- desmopressin
chlorpropamide increases effects of desmopressin by pharmacodynamic synergism. Minor/Significance Unknown.
- devil's claw
devil's claw increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- dexamethasone
dexamethasone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- diclofenac
diclofenac will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- diflunisal
diflunisal will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
diflunisal increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - doxepin
doxepin increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- elderberry
elderberry increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Increased risk of hypoglycemia (in vitro research).
- erythromycin base
erythromycin base increases levels of chlorpropamide by unknown mechanism. Minor/Significance Unknown. Risk of hepatotoxicity.
- erythromycin ethylsuccinate
erythromycin ethylsuccinate increases levels of chlorpropamide by unknown mechanism. Minor/Significance Unknown. Risk of hepatotoxicity.
- erythromycin lactobionate
erythromycin lactobionate increases levels of chlorpropamide by unknown mechanism. Minor/Significance Unknown. Risk of hepatotoxicity.
- erythromycin stearate
erythromycin stearate increases levels of chlorpropamide by unknown mechanism. Minor/Significance Unknown. Risk of hepatotoxicity.
- etodolac
etodolac will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- eucalyptus
eucalyptus increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Theoretical interaction.
- fenoprofen
fenoprofen will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- fludrocortisone
fludrocortisone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- fluoxymesterone
fluoxymesterone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- flurbiprofen
flurbiprofen will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- fo-ti
fo-ti increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- forskolin
forskolin increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Colenol, a compound found in Coleus root, may stimulate insulin release.
- ganciclovir
chlorpropamide will increase the level or effect of ganciclovir by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- gotu kola
gotu kola increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. (Theoretical interaction).
- guanfacine
guanfacine decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Diminished symptoms of hypoglycemia.
guanfacine, chlorpropamide. Other (see comment). Minor/Significance Unknown. Comment: Decreased symptoms of hypoglycemia. Mechanism: decreased hypoglycemia induced catecholamine production. - gymnema
gymnema increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- halofenate
halofenate increases effects of chlorpropamide by unknown mechanism. Minor/Significance Unknown.
- horse chestnut seed
horse chestnut seed increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- hydrochlorothiazide
hydrochlorothiazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
hydrochlorothiazide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - hydrocortisone
hydrocortisone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- ibuprofen
ibuprofen will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- ibuprofen IV
ibuprofen IV will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- imipramine
imipramine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- indapamide
indapamide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
indapamide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - indomethacin
indomethacin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- isoniazid
isoniazid decreases effects of chlorpropamide by unspecified interaction mechanism. Minor/Significance Unknown.
- juniper
juniper increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Increased risk of hypoglycemia (theoretical interaction).
- ketoprofen
ketoprofen will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- ketorolac
ketorolac will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- ketorolac intranasal
ketorolac intranasal will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- lofepramine
lofepramine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- lornoxicam
lornoxicam will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- lycopus
lycopus increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Increased risk of hypoglycemia (theoretical interaction).
- maitake
maitake increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Increased risk of hypoglycemia (animal research).
- maprotiline
maprotiline increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- meclofenamate
meclofenamate will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- mefenamic acid
mefenamic acid will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- meloxicam
meloxicam will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- mesalamine
mesalamine will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
mesalamine increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - mesterolone
mesterolone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- methyclothiazide
methyclothiazide will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
methyclothiazide decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - methylprednisolone
methylprednisolone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- methyltestosterone
methyltestosterone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- metolazone
metolazone will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
metolazone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown. Thiazide dosage >50 mg/day may increase blood glucose. - nabumetone
nabumetone will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- naproxen
naproxen will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- nettle
nettle increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. (Theoretical interaction).
- nortriptyline
nortriptyline increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- ofloxacin
ofloxacin, chlorpropamide. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Potential dysglycemia.
- orlistat
orlistat increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- oxandrolone
oxandrolone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- oxaprozin
oxaprozin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- oxymetholone
oxymetholone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- parecoxib
parecoxib will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- pegvisomant
pegvisomant increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- piroxicam
piroxicam will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- potassium acid phosphate
potassium acid phosphate increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Interaction especially seen in the treatment of hypokalemia.
- potassium chloride
potassium chloride increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Interaction especially seen in the treatment of hypokalemia.
- potassium citrate
potassium citrate increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Interaction especially seen in the treatment of hypokalemia.
- prednisolone
prednisolone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- prednisone
prednisone decreases effects of chlorpropamide by pharmacodynamic antagonism. Minor/Significance Unknown.
- protriptyline
protriptyline increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- rose hips
rose hips will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- sage
sage increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- salicylates (non-asa)
salicylates (non-asa) will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
salicylates (non-asa) increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - salsalate
salsalate will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
salsalate increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - sitagliptin
sitagliptin, chlorpropamide. Either increases effects of the other by pharmacodynamic synergism. Minor/Significance Unknown. Risk of hypoglycemia with combination is unknown.
- stevia
stevia increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- sulfasalazine
sulfasalazine will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
sulfasalazine increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate. - sulindac
sulindac will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- tacrolimus
chlorpropamide increases levels of tacrolimus by unknown mechanism. Minor/Significance Unknown.
- testosterone
testosterone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- testosterone buccal system
testosterone buccal system increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- testosterone topical
testosterone topical increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- tolfenamic acid
tolfenamic acid will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- tolmetin
tolmetin will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- tongkat ali
tongkat ali increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown. Risk of hypoglycemia.
- trazodone
trazodone increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- trimipramine
trimipramine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- valganciclovir
chlorpropamide will increase the level or effect of valganciclovir by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
- vanadium
vanadium increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.
- vasopressin
chlorpropamide increases effects of vasopressin by pharmacodynamic synergism. Minor/Significance Unknown.
- willow bark
willow bark will increase the level or effect of chlorpropamide by acidic (anionic) drug competition for renal tubular clearance. Minor/Significance Unknown.
willow bark increases effects of chlorpropamide by plasma protein binding competition. Minor/Significance Unknown. Large dose of salicylate.
Adverse Effects
Frequency Not Defined
Dermatologic reactions
Hypoglycemia
Dizziness
Headache
Hepatic porphyria
Liver failure
Anorexia
Agranulocytosis
Aplastic anemia
Nausea
Disulfiram-like reactions
Vomiting
Blood dyscrasias
Associated with greater number of side effects in the geriatric and renally impaired; should not be used as first line agent in these populations
Cholestatic jaundice and hepatitis may occur rarely which may progress to liver failure
Warnings
Contraindications
Type I diabetes
Diabetes ketoacidosis
Hypersensitivity, sulfa allergy
Severe renal impairment
Cautions
Half life prolonged in renal failure
Efficacy may decrease with prolonged use
Patients with risk of severe hypoglycemia, especiall elderly, debilitated, or malnourished patients, patients with risk factors for cardiovascular events, severe liver impairment
Pregnancy & Lactation
Pregnancy Category: C
Lactation: Excretion in milk unknown/not recommended
Pregnancy Categories
A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk. C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done. D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk. X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist. NA: Information not available.Pharmacology
Mechanism of Action
Initial effect to increase beta-cell insulin secretion; may also decrease rate of hepatic glucose production, increases insulin receptor sensitivity, and increases number of insulin receptors
Pharmacokinetics
Half-Life: 25-48 hr
Duration: 24 hr
Initial effect: Diabetes mellitus: 1 hr; Diabetes insipidus: 1 d
Maximum effect: Diabetes mellitus: 3-6 hr; Diabetes insipidus: 4-5 d
Protein Bound: 60-90%
Vd: 0.13-0.23 L/kg
Metabolism: Moderately to extensively metabolized in the liver
Metabolites: Hydroxychlorpropamide, chlorobenzene-sulfonylurea (inactive)
Excretion: Mainly in urine (80-90%)
Dialyzable: PD: no, HD: no
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Formulary
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