利福平:利福平是一种很强的酶诱导剂,它可促进口服避孕药中雌激素和孕激素类的代谢,因此,服用利福平者不应同时口服避孕药。抗惊厥药:同时服用口服避孕药和抗惊厥药导致避孕失败已达50例。涉及的药物有苯妥英、苯巴比妥、甲苯巴比妥、扑痫酮、卡马西平和乙琥胺等。这些药物均为肝微粒体酶诱导剂。抗生素:至少有88例妇女在用甾体避孕药的同时 Rifampicin: Rifampicin is a strong enzyme inducer that promotes the metabolism of estrogen and progestin in oral contraceptives. Therefore, people taking rifampin should not be given oral contraceptives at the same time. Anticonvulsant: At the same time taking oral contraceptives and anticonvulsants lead to contraception failure has reached 50 cases. The drugs involved are phenytoin, phenobarbital, phenobarbital, epilepsy ketone, carbamazepine and ethylsuccinate. These drugs are liver microsomal enzyme inducer. Antibiotics: At least 88 women use steroid contraceptives at the same time