Efavirenz + Ritonavir Interaction
Unknowninteraction on record
Description
Fosamprenavir/ritonavir: An additional 100 mg/day (300 mg total) of ritonavir is recommended when efavirenz tablets are administered with fosamprenavir/ritonavir once daily. No change in the ritonavir dose is required when efavirenz tablets are administered with fosamprenavir plus ritonavir twice daily. Protease inhibitor: Atazanavir ↓ atazanavir * Treatment –naïve patients : When co-administered with efavirenz tablets , the recommended dose of atazanavir is 400 mg with ritonavir 100 mg (together once daily with food) and efavirenz tablets 600 mg ( once daily on an empty stomach, preferably at bedtime).
Source: FDA drug label - efavirenz