The combined oral contraceptive pill, also known as "the pill", contains artificial versions of the female hormones oestrogen and progesterone.
Most women take the pill to reduce the risk of becoming pregnant (as it has a 99% effectiveness of preventing pregnancy) however some women go on the pill to help with their heavy or painful period.
The pill has its advantages but there are some side effects.
If they don't go after a few months, try changing to a different pill.
Read more on the combined pill on the NHS.
Superdrug's online doctor has recommended that you seek medical attention if you have any of these side effects:
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