Contraceptives are the most liberated women, making women will not be home bound fertility. Now many women are using oral contraceptives, contraception, contraceptive effectiveness is very good, the failure rate of only about 1% to 2%. However, if taking oral contraceptives at the same time the following drugs can lead to contraceptive failure. Therefore, the need for special attention.
Antibiotics
Long time use of penicillin, erythromycin, chloramphenicol and other antibiotics, will affect the absorption of contraceptives, lower drug concentration in the blood caused by contraceptive failure.
Sedative hypnotics
During the use of contraceptives, if at the same time taking birth control pills can speed up the metabolism of drugs, such as stability, Librium, tranquility, sleep and Qualcomm, and other sedative-hypnotics, will make birth control pills effective concentration in the blood decrease, resulting in contraceptive failure .
Rifampicin in the anti-TB drugs
Rifampicin can also speed up the metabolism of contraceptives, lower drug concentration in the blood lead to contraceptive failure.
Antiepileptic drugs
Such as phenobarbital, phenytoin, carbamazepine, flutter epilepsy ketones. When women with epilepsy taking these drugs, liver cells can promote the increase of drug metabolizing enzymes to speed up metabolism of birth control pills, but also the drug concentration in the blood greatly reduced, leading to contraceptive failure.
Therefore, oral contraceptives during long-term use of other drugs if needed when the situation should be your doctor medication for medical reference. Or disable the oral contraceptives, other contraceptive method change, such as the rhythm method or the use of condoms, vaginal ring.
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