Entavir 0.5 mg contains entecavir, which is an antiviral medication primarily used to treat chronic hepatitis B infection. It belongs to the class of nucleoside analogues and is known for its potent ability to reduce viral replication. Entavir helps to protect the liver from further damage, lower the risk of complications like cirrhosis, and improve long-term liver health.

Mechanism of Action
Entecavir works by targeting the hepatitis B virus at the molecular level. After entering liver cells infected with the virus, it gets converted into its active form and blocks the viral DNA polymerase enzyme. This enzyme is essential for the virus to replicate its genetic material and produce new virus particles. By interfering with multiple steps in the viral replication cycle, entecavir significantly reduces the amount of virus in the body.

Uses
Entavir 0.5 mg is mainly prescribed for:

• Chronic hepatitis B infection in adults and children above 2 years of age who have evidence of active viral replication and liver inflammation

• It is used in patients who have not received nucleoside analogue treatment before

• It may also be used in some HIV and hepatitis B co-infected patients, though with caution and under specialist supervision

Adverse Effects

Common side effects may include:

• Headache

• Tiredness

• Dizziness

• Nausea