Dosing & Uses
Dosage Forms & Strengths
tablet
- 100mg (Epivir HBV)
- 150mg (Epivir)
- 300mg (Epivir)
oral solution
- 5mg/mL (Epivir HBV)
- 10mg/mL (Epivir)
HIV Infection
Epivir: 300 mg PO qDay or 150 mg PO q12hr
Chronic Hepatitis B
Epivir HBV: 100 mg PO qDay
Renal Impairment
CrCl ≥ 50 mL/min: 150 mg PO q12hr or 300 mg PO qDay
CrCl 30-49 mL/min: 150 mg PO qDay
CrCl 15-29 mL/min: 150 mg first dose, then 100 mg qDay
CrCl 5-14 mL/min: 150 mg first dose, then 50 mg qDay
CrCl <5 mL/min: 50 mg first dose, then 25 mg qDay
See Also Combos
with zidovudine (Combivir)
with abacavir (Epzicom)
with abacavir/zidovudine
Dosing Considerations
Monitor amylase q4-8week
Dosage Forms & Strengths
tablet
- 100mg (Epivir HBV)
- 150mg (Epivir)
- 300mg (Epivir)
oral solution
- 5mg/mL (Epivir HBV)
- 10mg/mL (Epivir)
HIV Infection
Indicated for treatment of HIV infection in combination with other antiretroviral agents
Epivir oral solution
- Neonates (aged <4 weeks): 2 mg/kg PO q12hr (for prevention of transmission or treatment)
- ≥1 month: 4 mg/kg PO q12hr
- ≥3 months: 5 mg/kg PO q12hr or 10 mg/kg PO qDay; not to exceed 300 mg/day
- May switch to once daily dosing after age 3 yr in clinically stable patients with undetectable viral load and stable CD4 count (NIH HIV guidelines)
- Also see Dosing Considerations
Epivir tablet
Weight-based dosing
- 14 to <20 kg: 75 mg PO q12hr, OR 150 mg qDay
- ≥20 to <25 kg: 75 mg AM and 150 mg PM PO, OR 220 mg qDay
- ≥25 kg: 150 mg PO q12hr, OR 300 mg PO qDay
- The NIH pediatric HIV treatment guideline (March, 2016) does not recommend initiating once-daily lamivudine liquid formulation for HIV-infected infants and young children
Chronic Hepatitis B
Use Epivir HBV
<2 years: Safety and efficacy not established
≥2 years: 3 mg/kg PO qDay; not to exceed 100 mg/day
Dosing Considerations
Monitor amylase q4-8week
Lamiduvine 150-mg scored tablet is the preferred formulation for HIV-1 infected children and adolescents ≥14kg and whom a solid dosage form is appropriate
Tablet regimens are recommended when possible to avoid potential interactions with sorbitol
Consider more frequent monitoring of HIV-1 viral load when treating with lamiduvine (Epivir) oral solution; see also warnings and precautions section
Interactions
Interaction Checker
No Results
Contraindicated
Serious - Use Alternative
Significant - Monitor Closely
Minor
Contraindicated (2)
- elvitegravir/cobicistat/emtricitabine/tenofovir DF
lamivudine, elvitegravir/cobicistat/emtricitabine/tenofovir DF. Other (see comment). Contraindicated. Comment: Elvitegravir/cobicistat/emtricitabine/tenofovir is a complete regimen for HIV and should not be administered with other antiretrovirals.
- emtricitabine
emtricitabine and lamivudine both increase risk of immune reconstitution syndrome. Contraindicated. Coadministration of emtricitabine containing products and lamivudine containing products should be avoided. Combination will result in therapeutic duplication.
emtricitabine, lamivudine. Other (see comment). Contraindicated. Comment: Coadministration of emtricitabine containing products and lamivudine containing products should be avoided. Combination will result in therapeutic duplication.
Serious - Use Alternative (6)
- betibeglogene autotemcel
lamivudine, betibeglogene autotemcel. Other (see comment). Avoid or Use Alternate Drug. Comment: Do not take antiretroviral medications for at least 1 month before mobilization or expected duration for elimination of the medications, and until all cycles of apheresis are completed. Antiretroviral medications may interfere with manufacturing of apheresed cells.
- cabotegravir
lamivudine, cabotegravir. Other (see comment). Avoid or Use Alternate Drug. Comment: Cabotegravir plus rilpivirine is a complete regimen. Coadministration with other antiretroviral medications for treating HIV-1 infection is not recommended.
- elivaldogene autotemcel
elivaldogene autotemcel, lamivudine. Either decreases effects of the other by Other (see comment). Avoid or Use Alternate Drug. Comment: Patients should not take antiretroviral medications for at least 1 month before initiating medications for stem cell mobilization, for the duration of the medications? elimination, and until all cycles of apheresis are completed.
- sorbitol
sorbitol will decrease the level or effect of lamivudine by Other (see comment). Avoid or Use Alternate Drug. Sorbitol-containing solution decreased systemic exposure of lamivudine oral solution in a pediatric study (ARROW trial). Results showed lower rates of virologic suppression, lower plasma lamivudine exposure, and development of viral resistance more frequently than children receiving lamivudine tablets.
- tafenoquine
tafenoquine will increase the level or effect of lamivudine by Other (see comment). Avoid or Use Alternate Drug. Tafenoquine inhibits organic cation transporter-2 (OCT2) and multidrug and toxin extrusion (MATE) transporters in vitro. Avoid coadministration with OCT2 or MATE substrates. If coadministration cannot be avoided, monitor for substrate-related toxicities and consider dosage reduction if needed based on product labeling of the coadministered drug.
- trilaciclib
trilaciclib will decrease the level or effect of lamivudine by Other (see comment). Avoid or Use Alternate Drug. Avoid coadministration of trilaciclib (OCT2, MATE1, and MATE-2K inhibitor) with substrates where minimal increased concentration in kidney or blood may lead to serious or life-threatening toxicities.
Monitor Closely (25)
- abacavir
abacavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- atazanavir
atazanavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- cabozantinib
lamivudine will increase the level or effect of cabozantinib by Other (see comment). Use Caution/Monitor. MRP2 inhibitors increase cabozantinib toxicity
- efavirenz
efavirenz and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- enfuvirtide
enfuvirtide and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- erdafitinib
lamivudine increases levels of erdafitinib by decreasing renal clearance. Modify Therapy/Monitor Closely. Consider alternatives that are not OCT2 substrates or consider reducing the dose of OCT2 substrates based on tolerability.
- fosamprenavir
fosamprenavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- ganciclovir
ganciclovir, lamivudine. Either increases toxicity of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Increased risk of hematologic toxicity.
- indinavir
indinavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- interferon alfa 2b
interferon alfa 2b, lamivudine. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of liver decompensation.
- nelfinavir
nelfinavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- nevirapine
lamivudine and nevirapine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- orlistat
orlistat will decrease the level or effect of lamivudine by inhibition of GI absorption. Applies only to oral form of both agents. Use Caution/Monitor. Loss of virological control reported in HIV-infected patients taking orlistat concomitantly. Exact mechanism is unclear, but may include a drug-drug interaction that inhibits systemic absorption of the antiretroviral drug. Monitor HIV RNA levels frequently and if increased HIV viral load confirmed, discontinue orlistat.
- peginterferon alfa 2a
peginterferon alfa 2a, lamivudine. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of liver decompensation.
- peginterferon alfa 2b
peginterferon alfa 2b, lamivudine. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of liver decompensation.
- ribavirin
ribavirin increases toxicity of lamivudine by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Use alternatives if available. Increased risk of lactic acidosis.
- ritonavir
ritonavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- saquinavir
saquinavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- stavudine
lamivudine and stavudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- tenofovir DF
lamivudine and tenofovir DF both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- tipranavir
tipranavir and lamivudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
- trimethoprim
trimethoprim increases effects of lamivudine by basic (cationic) drug competition for renal tubular clearance. Use Caution/Monitor. Potential for increased toxicity.
- ublituximab
ublituximab decreases effects of lamivudine by immunosuppressive effects; risk of infection. Modify Therapy/Monitor Closely.
- valganciclovir
valganciclovir, lamivudine. Either increases toxicity of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Use alternatives if available. Increased risk of hematologic toxicity.
- zidovudine
lamivudine and zidovudine both increase risk of immune reconstitution syndrome. Use Caution/Monitor.
Minor (3)
- isavuconazonium sulfate
isavuconazonium sulfate will increase the level or effect of lamivudine by Other (see comment). Minor/Significance Unknown. Isavuconazonium sulfate, an OCT2 inhibitor, may increase the effects or levels of OCT2 substrates.
- sulfamethoxazole
sulfamethoxazole increases levels of lamivudine by decreasing renal clearance. Minor/Significance Unknown.
- zidovudine
lamivudine increases effects of zidovudine by pharmacodynamic synergism. Minor/Significance Unknown. Beneficial synergism.
Adverse Effects
>10%
Cough
Diarrhea
Fatigue & malaise
Fever (peds)
Headache
Musculoskeletal pain
Nausea
Nervous system neuropathy
Pancreatitis
Peripheral neuropathy
Nasal S/S
Vomiting
1-10%
Abdominal cramps, abdominal pain
Anorexia &/or decr appetite
Arthralgia
Chills
Depression
Dizziness
Dyspepsia
Insomnia
Myalgia
Rash
Thrombocytopenia
Creatine phosphokinase increased
Frequency Not Defined
Body fat redistribution
Elevated amylase
Neutropenia
Hepatitis B exacerbation
Postmarketing reports
Immune reconstitution
Blood and lymphatic system disorders
Anemia (including pure red cell aplasia and severe anemias progressing on therapy), lymphadenopathy, splenomegaly, thrombocytopenia
Warnings
Black Box Warnings
Epivir-HBV is not FDA approved for treatment of HIV-1 infection; lamivudine dosage in EPIVIR-HBV is subtherapeutic and monotherapy is inappropriate for the treatment of HIV-1 infection and the safety and efficacy of this drug have not been established in patients co-infected with HBV and HIV; severe acute exacerbations of hepatitis B reported in patients who have discontinued anti-hepatitis B therapy (including HBV formulation); hepatic function should be monitored closely with both clinical and laboratory follow-up for at least several months in patients who discontinue anti-hepatitis B therapy; if appropriate, initiation of anti-hepatitis B therapy may be warranted
Tablets and oral solution formulations used to treat HIV infection contain a higher dose of lamivudine than formulations indicated for chronic hepatitis B infection; HBV is not approved for treatment of HIV-1 infection because lamivudine dosage in HBV formulation is subtherapeutic and monotherapy is inappropriate for treatment of HIV-1 infection; patients with HIV should receive only formulation specific for HIV
Contraindications
Hypersensitivity
Cautions
Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, reported with use of nucleoside analogues, including lamivudine; a majority of these cases have been in women; female sex and obesity may be risk factors for development of lactic acidosis and severe hepatomegaly with steatosis in patients treated with antiretroviral nucleoside analogues; suspend treatment in any patient who develops clinical or laboratory findings suggestive of lactic acidosis or pronounced hepatotoxicity, which may include hepatomegaly and steatosis even in the absence of marked transaminase elevations
In pediatric patients with a history of prior antiretroviral nucleoside exposure, a history of pancreatitis, or other significant risk factors for the development of pancreatitis, this drug should be used with caution; discontinue immediately if signs or symptoms of pancreatitis occur in patients with history of pancreatitis
In order to reduce risk of resistance in patients receiving monotherapy, consider a switch to alternative regimen if serum HBV DNA remains detectable after 24 weeks of treatment; optimal therapy should be guided by resistance testing
Patients with HIV-1 infection should receive only dosage forms of lamivudine appropriate for treatment of HIV-1
Emergence of lamivudine-resistant HBV variants associated with lamivudine-containing antiretroviral regimens reported
Concomitant administration of emtricitabine with lamivudine-containing products not recommended
Hepatic decompensation (some fatal) reported in HIV-1/HCV co-infected patients receiving interferon and ribavirin-based regimens; monitor for treatment-associated toxicities; discontinue therapy as medically appropriate and consider dose reduction or discontinuation of interferon alfa, ribavirin, or both
Use with caution in pediatric patients with a history of pancreatitis or other significant risk factors for pancreatitis; discontinue treatment as clinically appropriate
Differences among lamivudine-containing products
- Formulation and dosage of lamivudine in EPIVIR-HBV are not appropriate for patients co-infected with HIV-1 and HBV; safety and efficacy of lamivudine have not been established for treatment of chronic hepatitis B in patients co-infected with HIV-1 and HBV
- If treatment with EPIVIR-HBV is prescribed for chronic hepatitis B for a patient with unrecognized or untreated HIV-1 infection, rapid emergence of, HIV-1 resistance is likely to result because of the subtherapeutic dose and the inappropriateness of monotherapy HIV-1 treatment
- If a decision is made to administer lamivudine to patients co-infected with HIV-1 and HBV, EPIVIR tablets, EPIVIR oral solution, or another product containing the higher dose of lamivudine should be used as part of an appropriate combination regimen
Posttreatment exacerbation of hepatitis
- Clinical and laboratory evidence of exacerbations of hepatitis have occurred after discontinuation of lamivudine; exacerbations have been detected primarily by serum ALT elevations in addition to re-emergence of HBV DNA
- Although most events appear to have been self-limited, fatalities have been reported in some cases; similar events have been reported from postmarketing experience after changes from lamivudine-containing HIV-1 treatment regimens to non-lamivudine-containing regimens in patients infected with both HIV-1 and HBV
- The causal relationship to discontinuation of lamivudine treatment is unknown; patients should be closely monitored with both clinical and laboratory follow-up for at least several months after stopping treatment
Immune reconstitution
- Immune reconstitution syndrome reported in patients treated with combination antiretroviral therapy; during the initial phase of combination antiretroviral treatment, patients whose immune systems respond may develop an inflammatory response to indolent or residual opportunistic infections (such as Mycobacterium avium infection, cytomegalovirus, Pneumocystis jirovecii pneumonia [PCP], or tuberculosis), which maynecessitate further evaluation and treatment
- Autoimmune disorders (such as Graves’ disease, polymyositis, and Guillain-Barré syndrome)also reported to occur in setting of immune reconstitution, however, the time to onset is more variable, and can occur many months after initiation of treatment
Lower Virologic Suppression Rates and Increased Risk of Viral Resistance with Oral Solution
- Pediatric subjects who received lamivudine (Epivir) oral solution concomitantly with other antiretroviral oral solutions at any time in the ARROW trial had lower rates of virologic suppression, lower plasma lamivudine exposure, and developed viral resistance more frequently than those receiving lamivudine (Epivir) tablets; lamivudine (Epivir) scored tablet is the preferred formulation for HIV-1-infected pediatric patients who weigh at least 14 kg and for whom a solid dosage form is appropriate; consider more frequent monitoring of HIV-1 viral load when treating with lamivudine (EPIVIR) oral solution
Pregnancy & Lactation
Pregnancy
A pregnancy registry has been established to monitor maternal-fetal outcomes of women exposed to lamivudine: 1-800-258-4263
Available data from the APR show no difference in the overall risk of birth defects for lamivudine or zidovudine compared with background rate for birth defects of 2.7% in the Metropolitan Atlanta Congenital Defects Program (MACDP) reference population; APR uses the MACDP as the U.S. reference population for birth defects in the general population; MACDP evaluates women and infants from a limited geographic area and does not include outcomes for births that occurred at less than 20 weeks gestation; rate of miscarriage is not reported in the APR
Lactation
The Centers for Disease Control and Prevention recommend that HIV-1-infected mothers in the United States not breastfeed infants to avoid risking postnatal transmission of HIV-1 infection; lamivudine is present in human milk; there is no information on effects of lamivudine or zidovudine on breastfed infant or effects of drugs on milk production; because of potential for (1) HIV-1 transmission (in HIV-negative infants), (2)developing viral resistance (in HIV-positive infants), and (3) serious adverse reactions in a breastfed infant, instruct mothers not to breastfeed if they are receiving therapy
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
Nucleoside Reverse Transcriptase Inhibitor (NRTI); following phosphorylation, inhibits HIV reverse transcriptase by viral DNA chain termination; cytosine analog
Useful in combination with ZDV
ZDV-induced codon mutations result in viral sensitivity to drug
Pharmacokinetics
Absorption: Rapid
Vd: 1.3 L/kg
Protein Bound: <36%
Metabolism: 5.6% to trans-sulfoxide metabolite
Bioavailability: Absolute; Cp max decreased with food although AUC not significantly affected, 66% (children); 87% (adults)
Half-life elimination: 2 hr (children); 5-7 hr (adults)
Excretion: Primarily urine
Images
| BRAND | FORM. | UNIT PRICE | PILL IMAGE |
|---|---|---|---|
| Epivir oral - | 150 mg tablet |  | |
| Epivir oral - | 10 mg/mL solution |  | |
| Epivir oral - | 300 mg tablet |  | |
| lamivudine oral - | 100 mg tablet |  | |
| lamivudine oral - | 300 mg tablet |  | |
| lamivudine oral - | 150 mg tablet |  | |
| lamivudine oral - | 150 mg tablet |  | |
| lamivudine oral - | 100 mg tablet |  | |
| lamivudine oral - | 300 mg tablet |  | |
| lamivudine oral - | 10 mg/mL solution |  | |
| lamivudine oral - | 150 mg tablet |  | |
| lamivudine oral - | 10 mg/mL solution |  | |
| lamivudine oral - | 150 mg tablet |  | |
| lamivudine oral - | 100 mg tablet |  | |
| lamivudine oral - | 300 mg tablet |  | |
| lamivudine oral - | 300 mg tablet |  | |
| lamivudine oral - | 150 mg tablet |  | |
| lamivudine oral - | 300 mg tablet |  |
Copyright © 2010 First DataBank, Inc.
Patient Handout
lamivudine oral
LAMIVUDINE-HBV - ORAL
(la-MIV-ue-deen)
COMMON BRAND NAME(S): Epivir HBV
WARNING: HIV counseling and testing should be offered to all patients both before and during treatment with lamivudine-HBV. Lamivudine-HBV contains a lower dose of the drug lamivudine, which is used to treat HIV infection as well as hepatitis B. Use of lamivudine-HBV in patients with unknown or untreated HIV infection could result in new types of HIV virus that are more difficult to treat (drug-resistant).Severe worsening of hepatitis has occurred when this medication is stopped. Liver and blood testing should continue for several months after lamivudine-HBV is stopped. Consult your doctor or pharmacist for more information.
USES: Lamivudine-HBV is used to treat hepatitis B infection. It is not a cure for hepatitis B and does not prevent the passing of hepatitis B to others. This medication is a nucleoside reverse transcriptase inhibitor (NRTI) that works by slowing the growth of the virus, thereby decreasing liver damage caused by the virus.
HOW TO USE: Read the Patient Information Leaflet if available from your pharmacist before you start using lamivudine-HBV and each time you get a refill. If you have any questions, ask your doctor or pharmacist.Take lamivudine-HBV by mouth with or without food as directed by your doctor, usually once a day. The dosage is based on your medical condition and response to treatment.Use this medicine regularly in order to get the most benefit from it. This medication works best when the amount of drug in your body is kept at a constant level. Remember to use it at the same time each day. Do not skip any doses.Do not stop taking this medication without consulting your doctor. Worsening of your condition, decreased response to medication, or development of drug-resistant types of the virus may occur during or after treatment. Promptly report any new symptoms that occur during or after treatment to your doctor.
SIDE EFFECTS: Nausea, vomiting, diarrhea, dizziness, headache, fatigue, or infections of the ear/nose/throat may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Rarely, lamivudine-HBV has caused severe (sometimes fatal) liver problems and a buildup of lactic acid in the blood (lactic acidosis). These serious side effects may occur more often in women and obese patients. Get medical help right away if you have any very serious side effects, including: symptoms of liver problems (such as nausea/vomiting that doesn't stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine), symptoms of lactic acidosis (such as deep/rapid breathing, drowsiness, nausea/vomiting).Tell your doctor right away if you have any serious side effects, including: mental/mood changes, muscle/joint pain, tingling/numbness in hands or feet.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
PRECAUTIONS: Before taking lamivudine-HBV, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using lamivudine-HBV, tell your doctor or pharmacist your medical history, especially of: pancreatitis, HIV infection, kidney disease, blood disorders, liver disease.This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).Liquid preparations of lamivudine-HBV contain sugar (sucrose). If you are a diabetic using the liquid form of this drug, closer monitoring of your blood sugar is recommended as you begin using this drug. Talk with your doctor or pharmacist for more details.Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Children may be more sensitive to the side effects of this drug, especially the increased risk of pancreatitis.During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. This medication has not been shown to prevent the passing of hepatitis B from the mother to the newborn. Consult your doctor for more information.This medication passes into breast milk. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.A product that may interact with this drug is: sorbitol.Do not take this medication with other products (including those that treat HIV infection) that contain lamivudine.Emtricitabine is similar to lamivudine and should not be taken with this medication.This medication may interfere with certain lab tests (such as liver function tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.
OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
NOTES: To avoid spreading hepatitis B to others, always use an effective barrier method (such as latex condoms/dental dams) during sexual activity. Consult your doctor or pharmacist for more details.Do not share this medication with others.Lab and/or medical tests (such as liver function, blood chemistries, complete blood counts, hepatitis B virus DNA levels) should be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.Different brands of this drug have different amounts of active drug. Do not switch brands of this medication without first checking with your doctor. If you have an HIV infection, you should be taking the higher-strength dosage. Consult your doctor or pharmacist for more details.
MISSED DOSE: If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
STORAGE: Different brands of this medication have different storage needs. Check the product package for instructions on how to store your brand, or ask your pharmacist. Keep all medications away from children and pets.Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised August 2023. Copyright(c) 2023 First Databank, Inc.
IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Formulary
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Adding plans allows you to:
- View the formulary and any restrictions for each plan.
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