About entecavir
Guanosine nucleoside analogue antiviral
Used for
- Treats chronic hepatitis B infection
Usual adult dose
Usually 0.5 mg once daily on an empty stomach; some patients need 1 mg daily.
Usual dose in children
For children aged 2 years and older, dose depends on weight and treatment history.
Common side effects
- Headache
- Fatigue
- Dizziness
- Nausea
Important warnings
- Do not stop suddenly; hepatitis can worsen after stopping.
- Rarely causes lactic acidosis or severe liver enlargement.
- Kidney impairment may require dose adjustment.
- Does not prevent hepatitis B transmission.
Pregnancy
Use only when clearly needed; discuss risks and benefits with a healthcare professional.
Breastfeeding
It is unknown whether entecavir enters breast milk; discuss with a healthcare professional.
Interactions
- Medicines affecting kidney function may increase entecavir levels.
- Other medicines cleared by the kidneys may need monitoring.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.