Active Ingredient

Lamivudine

Lamivudine is an antiretroviral medication commonly used to manage viral infections. It is often part of combination therapy for treating HIV and hepatitis B infections.

This medication helps in controlling the infection, improving quality of life, and reducing the risk of complications.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Lamivudine Brands

Epivir HBV

Strengths 100mg, 150 mg

Epivir

Strengths 150 mg

Lamivudine Uses

Lamivudine is primarily used to treat viral infections. It is often prescribed in combination with other medications for better effectiveness.

Treatment of HIV infection in adults.
Management of chronic hepatitis B infection.
Part of combination therapy for HIV treatment.
Prevention of mother-to-child transmission of HIV during childbirth.

How Lamivudine Works

Lamivudine works by inhibiting the replication of viruses in the body. It belongs to a class of drugs known as nucleoside reverse transcriptase inhibitors (NRTIs).

By blocking the reverse transcriptase enzyme, it prevents the virus from multiplying and spreading.

This action helps in reducing the viral load in the body, allowing the immune system to function more effectively.

Common side effects of Lamivudine

Not everyone experiences side effects with Lamivudine, and many are mild and temporary. However, it’s important to be aware of them.

Headache
Nausea
Fatigue
Diarrhea
Insomnia
Cough
Muscle pain

If you experience serious or persistent symptoms, contact your healthcare provider.

Monitor your health regularly and report any unusual symptoms to your doctor.
Avoid alcohol as it may increase the risk of liver problems.
Inform your healthcare provider of all medications and supplements you are taking to avoid interactions.
Do not stop taking the medication without consulting your doctor, even if you feel better.
Use effective contraception to prevent pregnancy while on this medication.

Always consult your doctor for personalized medical advice and before making any changes to your treatment plan.

Frequently Asked Questions

How long does it take for Lamivudine to work?

The effects may begin soon after starting the medication, but it can take several weeks to see the full benefits. Always follow your doctor’s instructions.

Can Lamivudine cure HIV or hepatitis B?

Lamivudine is not a cure for HIV or hepatitis B, but it helps manage the infections and improve quality of life.

Is it safe to drink alcohol while taking Lamivudine?

It’s advisable to limit alcohol consumption as it may increase the risk of liver damage. Consult your doctor for guidance.

What should I do if I miss a dose of Lamivudine?

If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose. Do not double up on doses.

Are there any foods to avoid while taking Lamivudine?

There are no specific foods to avoid, but maintaining a balanced diet can help support your overall health. Discuss any dietary concerns with your healthcare provider.