Reliability of the pill

I just started taking the pill and read somewhere that some medicines can affect the reliability of the pill. Is this true?

Yes, it is true. Some medicines, such as antibiotics affect how the pill is absorbed by your body and may reduce your contraceptive cover. You should always tell your doctor you are taking the pill if you are being prescribed other kinds of medicine.

You should also be aware that if you are sick and throw up within three hours of taking or have diarrhoea then its reliability may be reduced. In both cases you should take an additional pill as soon as possible and within 12 hours and contact your doctor as soon as possible to check whether emergency contraception is necessary.