Vosevi + ribavirin

Vosevi + ribavirin is a combination therapy used for treating chronic hepatitis C virus (HCV) infection. Vosevi itself is a fixed-dose combination tablet containing three direct-acting antiviral medications: sofosbuvir (400mg), velpatasvir (100mg), and voxilaprevir (100mg)[1][4][5]. When combined with ribavirin, it creates a treatment regimen for specific HCV patient populations. ## Drug Components Vosevi contains three active ingredients that work through different mechanisms: 1. **Sofosbuvir** - A nucleotide analog NS5B polymerase inhibitor that blocks viral replication[1][2] 2. **Velpatasvir** - An NS5A inhibitor that interferes with viral replication and assembly[1][2] 3. **Voxilaprevir** - An NS3/4A protease inhibitor that prevents viral protein processing[1][2] When combined with ribavirin (a synthetic nucleoside analog with antiviral activity), this regimen may be used for difficult-to-treat HCV cases, particularly those who have failed previous direct-acting antiviral treatments. ## Indications and Usage Vosevi is primarily indicated for adult patients with chronic HCV infection who have: - Previously been treated with an NS5A inhibitor-containing regimen - Genotype 1a or 3 HCV previously treated with a sofosbuvir-containing regimen without an NS5A inhibitor - Either no cirrhosis or compensated cirrhosis[4] The addition of ribavirin to this regimen may be considered for certain difficult-to-treat patient populations, though this specific combination is not mentioned in the standard prescribing information provided in the search results. ## Important Safety Information - **Hepatitis B Reactivation Risk**: All patients should be tested for current or prior hepatitis B infection before starting treatment with Vosevi. HBV reactivation has been reported in HCV/HBV co-infected patients who were undergoing or had completed treatment with HCV direct-acting antivirals[2][3][5]. - **Drug Interactions**: Vosevi should not be administered with: - Rifampin (contraindicated)[2][7] - Rosuvastatin (contraindicated)[7] - Amiodarone (not recommended due to risk of serious bradycardia)[2][3] - Certain antiretrovirals like atazanavir or lopinavir[7] - **Common Side Effects**: Headache, fatigue, diarrhea, nausea, insomnia, and asthenia[5]. The standard treatment duration for Vosevi is 12 weeks, taken once daily with food[4][5].