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Complications of Progestogen-only pill

If you have to take any other medicines while you are taking the progestogen-only pill, make sure you tell the doctor or nurse treating you. Ask the pharmacist for advice if you are buying over-the-counter treatments. Certain medicines that are used to treat epilepsy, HIV and TB can make the progestogen-only pill less effective. The complementary medicine St John’s Wort can also affect how well the progestogen-only pill works.

If you take these medicines, talk to your doctor or nurse about how to take the pill or whether you need to use a different method of contraception.