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Entecavir: uses, side effects & brands
Entecavir is a long-term antiviral for chronic hepatitis B. It belongs to the HIV & hepatitis antiviral group. These control HIV or viral hepatitis. They are taken long-term (or as a full course) under specialist care.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | HIV & hepatitis antiviral |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Chronic hepatitis B infection
- Hepatitis B with liver scarring (cirrhosis)
- Long-term viral suppression to protect the liver
Common brand names
- India: Entavir, X-Vir
- Worldwide: Baraclude
Common side effects
- Headache
- Tiredness
- Dizziness
- Nausea
Before taking it — precautions
- Take on an empty stomach as advised
- Do not stop without your doctor; hepatitis can flare
- HIV testing is done first, as it can cause HIV resistance if HIV is untreated
When to see a doctor urgently
- Yellow skin or eyes, or dark urine (urgent)
- Severe tummy pain, fast breathing or extreme weakness (urgent)
- Swelling or confusion with liver disease (urgent)
Not a prescription — no dose shown. The right dose of entecavir depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
How long will I take entecavir?
Often for many years. Your doctor checks viral levels and liver tests to decide.
Does entecavir cure hepatitis B?
It controls the virus and protects the liver but rarely clears the infection.
Why the empty stomach?
Food reduces how much is absorbed.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.