https://www.selleckchem.com/pr....oducts/trastuzumab-e
Objective Among combined oral contraception (COC) users, to determine the effect on ovarian activity and ovulation of waiting five days before restarting COC, versus restarting immediately, having taken ulipristal acetate 30 mg (UPA, the dose used for emergency contraception) after missing three consecutive COC pills. Study design Women already using COC were enrolled for two cycles of COC use (21/7 regimen). In cycle 2, all women omitted COC pills for three consecutive days (days 5,6,7), and on day 8 took UPA 30 mg