Efavirenz + Fosamprenavir Calcium Interaction
Moderateinteraction on record
Description
Efavirenz decreases amprenavir concentrations. Appropriate doses of unboosted combination not established; additional ritonavir required with fosamprenavir/ritonavir once daily.
Mechanism
CYP3A and CYP2B6 induction
Source: NLP:efavirenz