Xiromed, Emergency Contraceptive, 1 TabProduct Description Emergency Contraceptive by Xiromed is designed to help prevent pregnancy after unprotected intercourse or contraceptive failure. This product contains a single dose of the active ingredient which works by delaying ovulation, inhibiting fertilization, or preventing a fertilized egg from implanting in the uterus. It is intended for use as a backup method of contraception and should be taken as soon as possible after the incident.