oral contraceptives for contraception, easy. It was reported that existing 50 million or 60 million women in the world using this method of contraception. However, less well known is that take contraceptives for women if you take a particular drug, you can still lead to contraceptive failure. Stability is one of them. The drug belongs to liver microsomal enzyme inducers may accelerate the metabolism of oral contraceptives in the body, thereby reducing its contraceptive effect. Smaller than long-term stability to help sleep, is undoubtedly interfered with the contraceptive effect. Not only stability but, in recent years found that drugs can interfere with oral contraceptive effect of a combination of factors, such as sodium phenytoin, phenobarbital, Primidone, Lee sleep better, and so on, can influence taking birth control contraceptive effectiveness for women. In addition, the use of penicillin, erythromycin, and chloramphenicol in the longer term, as well as anti-TB drugs such as rifampicin, could also affect contraceptive efficacy. The reason is that in normal cases, oral contraceptives with the help of intestinal bacteria release a Hydrolase, absorbed by repeating in the enterohepatic circulation. Once you have blocked this enterohepatic circulation, may result in contraceptive failure. . These antibiotics have this effect.
therefore, the women of oral contraceptives during if illness required long-term use of drugs, shall indicate to the doctor to take birth control pills, for reference by doctors. Stopping oral contraceptives, alters other effective contraceptive methods safer.