Sex

Pill

The Pill / Smarties

There are two main types of pill - the combined pill contains two hormones, progestogen and oestrogen, which stop a woman ovulating (releasing an egg) each month.

Progestogen only pill - taken at the same time each day, it causes changes making it difficult for a woman to accept a fertilised egg, or for sperm to enter the womb. In some cases, it can prevent ovulation.

Advantages - 99% success rate and non intrusive.

Disadvantages - may be temporary side effects and periods may be irregular. Must be taken regularly. Heavy use of some recreational drugs may stop it working. Also - If you drink lots and then vomit, make sure you take another pill, especially if you've just taken one before you threw-up. In addition, certain antibiotics will stop your pill from working, so always ask your doctor or pharmacist for advice.