Når en enkelt 1400 mg dosis af fosamprenavir blev administreret sammen med en enkelt 30 ml dosis af antacidsuspension (equivalent med 3, 6 gram aluminiumhydroxid og 1, 8 gram magnesiumhydroxid) blev AUC og Cmax for amprenavir nedsat med henholdsvis 18% og 35%, mens Cmin (C12h) var uændret.
The AUC and Cmax of amprenavir were decreased by 18% and 35% respectively, whilst the Cmin (C12h) was comparable, when a single 1400 mg dose of fosamprenavir was co-administered with a single 30 ml dose of antacid suspension (equivalent to 3.6 grams aluminium hydroxide and 1.8 grams magnesium hydroxide).