Drug Interaction Report

Talk to your doctor before using fosamprenavir together with vonoprazan. By reducing stomach acid, vonoprazan can decrease the absorption and blood levels of fosamprenavir and make the medication less effective against HIV. Your doctor or pharmacist may be able to offer suggestions on safer alternatives if you require treatment for stomach acid or ulcer while you are being treated with fosamprenavir. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Fosamprenavir suspension should be administered on an empty stomach in adults, but with food in pediatric patients to help the taste and compliance. If vomiting occurs within 30 minutes after dosing the suspension, the dose should be repeated. Fosamprenavir tablets may be taken with or without food. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.