Nevirapine is an antiretroviral medication used in combination with other drugs to treat human immunodeficiency virus type 1 (HIV-1) infection. It is available as immediate-release (200 mg) and extended-release (400 mg) tablets, as well as an oral suspension. 

Key Information

• Usage: Nevirapine is part of combination antiretroviral therapy (ART) and is not a cure for HIV or AIDS. It works by blocking the HIV enzyme reverse transcriptase, which prevents the virus from multiplying in the body.

• Dosage: The standard adult regimen for the immediate-release tablet involves a 14-day "lead-in" period of one 200 mg tablet once daily to reduce the risk of rash. After this period, the dose is typically increased to one 200 mg tablet twice daily. Extended-release tablets (400 mg) are taken once daily after the initial lead-in period with immediate-release tablets.