Decreased AUC & C
max w/ etravirine (w/o boosted PIs), efavirenz, nevirapine, tipranavir/ritonavir, fosamprenavir/ritonavir, darunavir/ritonavir, carbamazepine, oxcarbazepine, phenytoin, phenobarb, St. John's wort, Mg- & Al-containing antacid, Ca & Fe supplements, multivit, rifampicin. Increased AUC & C
max w/ atazanavir, atazanavir/ritonavir. Increased dofetilide, pilsicainide, fampridine, metformin conc. Increased extent & slowed absorption rate w/ food.