The contraceptive pill is used by millions of women around the world. It is considered an excellent method of contraception. Of course, it does not protect against sexually transmitted diseases, which only the condom can do. Concomitant intake of some drugs (e.g. some antibiotics and anti-epileptics) can affect their absorption from the intestine and reduce their efficacy. Conversely, contraceptives can alter blood levels of some other medicines. Therefore, before taking any medication or going for surgery, always tell your doctor that you are taking oral contraceptives.