Dosing & Uses
Dosage Forms & Strengths
topical gel
- 10%; supplied as 100mg/1g unit (1.14mL) sachet
Overactive Bladder
Indicated for treatment of overactive bladder with symptoms of urge incontinence, frequency, and urgency
Gel sachet (10%): Apply 100 mg (content of 1 sachet 10%) qDay
Administration
For topical application only; should not be ingested
Apply to dry, intact skin on abdomen, upper arms/shoulders, or thigh
Wash hands immediately after application; cover application site with clothing after gel has dried if direct skin-to-skin contact is anticipated
Avoid showering for 1 hr following application
Rotate application sites, avoid same site on consecutive days
Safety and efficacy not established
Interactions
Interaction Checker
No Results

Contraindicated
Serious - Use Alternative
Significant - Monitor Closely
Minor

Contraindicated (0)
Serious - Use Alternative (3)
- lonafarnib
oxybutynin topical will increase the level or effect of lonafarnib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. If coadministration of lonafarnib (a sensitive CYP3A substrate) with weak CYP3A inhibitors is unavoidable, reduce to, or continue lonafarnib at starting dose. Closely monitor for arrhythmias and events (eg, syncope, heart palpitations) since lonafarnib effect on QT interval is unknown.
- pramlintide
pramlintide, oxybutynin topical. Either increases effects of the other by pharmacodynamic synergism. Contraindicated. Synergistic inhibition of GI motility.
- secretin
oxybutynin topical decreases effects of secretin by pharmacodynamic antagonism. Avoid or Use Alternate Drug. Concomitant use of anticholinergic drugs may cause a hyporesponse to stimulation testing with secretin. Discontinue anticholinergic drugs at least 5 half-lives before administering secretin.
Monitor Closely (100)
- abobotulinumtoxinA
abobotulinumtoxinA increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Use of anticholinergic drugs after administration of botulinum toxin-containing products may potentiate systemic anticholinergic effects.
- aclidinium
oxybutynin topical and aclidinium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- amantadine
oxybutynin topical, amantadine. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Potential for increased anticholinergic adverse effects.
- amitriptyline
oxybutynin topical and amitriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
- amoxapine
oxybutynin topical and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- anticholinergic/sedative combos
anticholinergic/sedative combos and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- aripiprazole
oxybutynin topical decreases levels of aripiprazole by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of aripiprazole by pharmacodynamic antagonism. Use Caution/Monitor.
aripiprazole increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - atracurium
atracurium and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- atropine
atropine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- atropine IV/IM
atropine IV/IM and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- avapritinib
oxybutynin topical will increase the level or effect of avapritinib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.
- axitinib
oxybutynin topical increases levels of axitinib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.
- belladonna alkaloids
belladonna alkaloids and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- belladonna and opium
belladonna and opium and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- benperidol
oxybutynin topical decreases levels of benperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of benperidol by pharmacodynamic antagonism. Use Caution/Monitor.
benperidol increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - benztropine
benztropine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor. Additive anticholinergic adverse effects may be seen with concurrent use.
- bethanechol
bethanechol increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- carbachol
carbachol increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- cevimeline
cevimeline increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- chlorpromazine
oxybutynin topical decreases levels of chlorpromazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of chlorpromazine by pharmacodynamic antagonism. Use Caution/Monitor.
chlorpromazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - cisatracurium
cisatracurium and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- clomipramine
oxybutynin topical and clomipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- clozapine
oxybutynin topical decreases levels of clozapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of clozapine by pharmacodynamic antagonism. Use Caution/Monitor.
clozapine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - cyclizine
cyclizine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- cyclobenzaprine
cyclobenzaprine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- darifenacin
darifenacin and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- desipramine
oxybutynin topical and desipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- dicyclomine
dicyclomine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- diphenhydramine
diphenhydramine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- donepezil
donepezil increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- donepezil transdermal
donepezil transdermal, oxybutynin topical. Either decreases effects of the other by pharmacodynamic antagonism. Use Caution/Monitor.
- dosulepin
oxybutynin topical and dosulepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
- doxepin
oxybutynin topical and doxepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
- droperidol
oxybutynin topical decreases levels of droperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of droperidol by pharmacodynamic antagonism. Use Caution/Monitor.
droperidol increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - echothiophate iodide
echothiophate iodide increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- fesoterodine
fesoterodine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- finerenone
oxybutynin topical will increase the level or effect of finerenone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. Monitor serum potassium during initiation and dosage adjustment of either finererone or weak CYP3A4 inhibitors. Adjust finererone dosage as needed.
- flavoxate
flavoxate and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- fluphenazine
oxybutynin topical decreases levels of fluphenazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of fluphenazine by pharmacodynamic antagonism. Use Caution/Monitor.
fluphenazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - galantamine
galantamine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- glycopyrrolate
glycopyrrolate and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- glycopyrrolate inhaled
glycopyrrolate inhaled and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- haloperidol
oxybutynin topical decreases effects of haloperidol by pharmacodynamic antagonism. Use Caution/Monitor.
oxybutynin topical decreases levels of haloperidol by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
haloperidol increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - henbane
henbane and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- homatropine
homatropine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- huperzine A
huperzine A increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- hyoscyamine
hyoscyamine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- hyoscyamine spray
hyoscyamine spray and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- iloperidone
oxybutynin topical decreases levels of iloperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of iloperidone by pharmacodynamic antagonism. Use Caution/Monitor.
iloperidone increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - imipramine
oxybutynin topical and imipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- ipratropium
ipratropium and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor. Due to the poor systemic absorption of ipratropium, interaction unlikely at regularly recommended dosages.
- isavuconazonium sulfate
oxybutynin topical will increase the level or effect of isavuconazonium sulfate by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.
- ivacaftor
oxybutynin topical increases levels of ivacaftor by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Monitor when coadministered with weak CYP3A4 inhibitors .
- lofepramine
oxybutynin topical and lofepramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- lomitapide
oxybutynin topical increases levels of lomitapide by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Lomitapide dose should not exceed 30 mg/day.
- loxapine
oxybutynin topical decreases levels of loxapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of loxapine by pharmacodynamic antagonism. Use Caution/Monitor.
loxapine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - loxapine inhaled
loxapine inhaled increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia.
oxybutynin topical decreases levels of loxapine inhaled by pharmacodynamic antagonism. Use Caution/Monitor. - maprotiline
oxybutynin topical and maprotiline both decrease cholinergic effects/transmission. Use Caution/Monitor.
- meclizine
meclizine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- methscopolamine
methscopolamine and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- metoclopramide
oxybutynin topical decreases effects of metoclopramide by pharmacodynamic antagonism. Use Caution/Monitor. May antagonize prokinetic effects.
- neostigmine
neostigmine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- nitrofurantoin
oxybutynin topical increases levels of nitrofurantoin by unspecified interaction mechanism. Use Caution/Monitor.
- nortriptyline
oxybutynin topical and nortriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
- olanzapine
oxybutynin topical decreases levels of olanzapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of olanzapine by pharmacodynamic antagonism. Use Caution/Monitor.
olanzapine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - onabotulinumtoxinA
onabotulinumtoxinA and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- orphenadrine
oxybutynin topical and orphenadrine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- oxybutynin
oxybutynin and oxybutynin topical both decrease cholinergic effects/transmission. Use Caution/Monitor.
- paliperidone
oxybutynin topical decreases levels of paliperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of paliperidone by pharmacodynamic antagonism. Use Caution/Monitor.
paliperidone increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - pancuronium
oxybutynin topical and pancuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- perphenazine
oxybutynin topical decreases levels of perphenazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of perphenazine by pharmacodynamic antagonism. Use Caution/Monitor.
perphenazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - physostigmine
physostigmine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pilocarpine
pilocarpine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pimozide
oxybutynin topical decreases levels of pimozide by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of pimozide by pharmacodynamic antagonism. Use Caution/Monitor.
pimozide increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - pralidoxime
oxybutynin topical and pralidoxime both decrease cholinergic effects/transmission. Use Caution/Monitor.
- prochlorperazine
oxybutynin topical decreases levels of prochlorperazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of prochlorperazine by pharmacodynamic antagonism. Use Caution/Monitor.
prochlorperazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - promethazine
oxybutynin topical decreases levels of promethazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of promethazine by pharmacodynamic antagonism. Use Caution/Monitor.
promethazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - propantheline
oxybutynin topical and propantheline both decrease cholinergic effects/transmission. Use Caution/Monitor.
- protriptyline
oxybutynin topical and protriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
- pyridostigmine
pyridostigmine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- quetiapine
oxybutynin topical decreases levels of quetiapine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of quetiapine by pharmacodynamic antagonism. Use Caution/Monitor.
quetiapine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - rapacuronium
oxybutynin topical and rapacuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- risperidone
oxybutynin topical decreases levels of risperidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of risperidone by pharmacodynamic antagonism. Use Caution/Monitor.
risperidone increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - rocuronium
oxybutynin topical and rocuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- scopolamine
oxybutynin topical and scopolamine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- solifenacin
oxybutynin topical and solifenacin both decrease cholinergic effects/transmission. Use Caution/Monitor.
- succinylcholine
succinylcholine increases and oxybutynin topical decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- thioridazine
oxybutynin topical decreases levels of thioridazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of thioridazine by pharmacodynamic antagonism. Use Caution/Monitor.
thioridazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - thiothixene
oxybutynin topical decreases levels of thiothixene by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of thiothixene by pharmacodynamic antagonism. Use Caution/Monitor.
thiothixene increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - tinidazole
oxybutynin topical will increase the level or effect of tinidazole by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.
- tiotropium
oxybutynin topical and tiotropium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- tolterodine
oxybutynin topical and tolterodine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- trazodone
oxybutynin topical and trazodone both decrease cholinergic effects/transmission. Use Caution/Monitor.
- trifluoperazine
oxybutynin topical decreases levels of trifluoperazine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of trifluoperazine by pharmacodynamic antagonism. Use Caution/Monitor.
trifluoperazine increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - trihexyphenidyl
oxybutynin topical and trihexyphenidyl both decrease cholinergic effects/transmission. Use Caution/Monitor. Potential for additive anticholinergic effects.
- trimipramine
oxybutynin topical and trimipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
- trospium chloride
oxybutynin topical and trospium chloride both decrease cholinergic effects/transmission. Use Caution/Monitor.
- vecuronium
oxybutynin topical and vecuronium both decrease cholinergic effects/transmission. Use Caution/Monitor.
- ziprasidone
oxybutynin topical decreases levels of ziprasidone by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of ziprasidone by pharmacodynamic antagonism. Use Caution/Monitor.
ziprasidone increases effects of oxybutynin topical by pharmacodynamic synergism. Use Caution/Monitor. Additive anticholinergic effects, possible hypoglycemia. - zotepine
oxybutynin topical decreases levels of zotepine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor.
oxybutynin topical decreases levels of zotepine by pharmacodynamic antagonism. Use Caution/Monitor.
Minor (20)
- acetaminophen
oxybutynin topical decreases levels of acetaminophen by unspecified interaction mechanism. Minor/Significance Unknown.
- acetaminophen IV
oxybutynin topical decreases levels of acetaminophen IV by unspecified interaction mechanism. Minor/Significance Unknown.
- acetaminophen rectal
oxybutynin topical decreases levels of acetaminophen rectal by unspecified interaction mechanism. Minor/Significance Unknown.
- amantadine
amantadine increases effects of oxybutynin topical by pharmacodynamic synergism. Minor/Significance Unknown.
- atenolol
atenolol increases levels of oxybutynin topical by decreasing metabolism. Minor/Significance Unknown.
- chlorpromazine
oxybutynin topical increases toxicity of chlorpromazine by unspecified interaction mechanism. Minor/Significance Unknown.
- digoxin
oxybutynin topical increases levels of digoxin by unspecified interaction mechanism. Minor/Significance Unknown.
- dimenhydrinate
dimenhydrinate increases toxicity of oxybutynin topical by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.
- donepezil
donepezil decreases effects of oxybutynin topical by pharmacodynamic antagonism. Minor/Significance Unknown.
- fluphenazine
oxybutynin topical increases toxicity of fluphenazine by unspecified interaction mechanism. Minor/Significance Unknown.
- galantamine
galantamine decreases effects of oxybutynin topical by pharmacodynamic antagonism. Minor/Significance Unknown.
- levodopa
oxybutynin topical, levodopa. Other (see comment). Minor/Significance Unknown. Comment: Anticholinergic agents may enhance the therapeutic effects of levodopa; however, anticholinergic agents can exacerbate tardive dyskinesia. In high dosage, anticholinergics may decrease the effects of levodopa by delaying its GI absorption. .
- perphenazine
oxybutynin topical increases toxicity of perphenazine by unspecified interaction mechanism. Minor/Significance Unknown.
- prochlorperazine
oxybutynin topical increases toxicity of prochlorperazine by unspecified interaction mechanism. Minor/Significance Unknown.
- promazine
oxybutynin topical increases toxicity of promazine by unspecified interaction mechanism. Minor/Significance Unknown.
- promethazine
oxybutynin topical increases toxicity of promethazine by unspecified interaction mechanism. Minor/Significance Unknown.
- ruxolitinib
oxybutynin topical will increase the level or effect of ruxolitinib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.
- ruxolitinib topical
oxybutynin topical will increase the level or effect of ruxolitinib topical by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.
- thioridazine
oxybutynin topical increases toxicity of thioridazine by unspecified interaction mechanism. Minor/Significance Unknown.
- trifluoperazine
oxybutynin topical increases toxicity of trifluoperazine by unspecified interaction mechanism. Minor/Significance Unknown.
Adverse Effects
NOTE: anticholinergic adverse effects are less with topical application compared with oral administration
1-10%
Xerostomia (7.5%)
Urinary tract infection (6.9%)
Application site reaction (5.4%)
Dizziness (2.8%)
Fatigue (2.1%)
Constipation (1.3%)
Warnings
Contraindications
Hypersensitivity
Gastric retention
Uncontrolled narrow-angle glaucoma
Urinary retention
Conditions that severely decrease GI motility
Cautions
Caution with clinically significant bladder outflow obstruction because of the risk of urinary retention
Caution with gastrointestinal obstructive disorders or decreased intestinal motility because of the risk of gastric retention
Caution with GERD and/or those taking drugs that can cause or exacerbate esophagitis (eg, bisphosphonates)
Caution with myasthenia gravis because of decreased cholinergic activity
Discontinue if skin hypersensitivity occurs
Caution with other anticholinergics (antimuscarinics); may increase risk for xerostomia, constipation, headache, dizziness, somnolence, and blurred vision
Angioedema requiring hospitalization and emergency medical treatment has occurred with the first or subsequent doses of oral oxybutynin; in the event of angioedema, oxybutynin containing products should be discontinued and appropriate therapy promptly provided
Somnolence reported with oxybutynin-containing products; use caution with activities requiring mental alertness
Gelnique is flammable
Pregnancy & Lactation
Pregnancy Category: B
Lactation: Unknown whether distributed in breast milk, caution advised
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
Exerts antispasmodic and antimuscarinic effects on smooth muscle; decreases uninhibited urinary contractions, and delays desire to void; increases bladder capacity
Pharmacokinetics
Vd: 193 L (IV)
Peak Plasma Concentration: 6.8-8.3 ng/mL (gel)
Metabolism: bypasses first-pass in liver by CYP3A4, AUC ratio of N-desethyloxybutynin (active metabolite) to parent compound is 1:1
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