POTENT CYP 3A4 INDUCER RIFAMPICIN 600 MG or PHENYTOIN, CARBAMAZEPINE, PHENOBARBITAL, OR ST. JOHN'S WORT DAILY FOR 14 DAYS FOLLOWED BY A SINGLE DOSE OF EXEMESTANE 25 MG, THE MEAN PLASMA CMAX AND AUC 0β 8 OF EXEMESTANE WERE DECREASED BY 50%, IN SUCH CASES RECOMMENDED DOSE OF AROMASIN IS 50 MG ONCE DAILY AFTER A MEAL.