Emergency contraceptive pill - Interactions 

Interactions with other medicines 

Other contraception

It is fine to take the emergency contraceptive pill if you are already taking a combined oral contraceptive pill or progestogen-only pill.

If you needed to take the emergency contraceptive pill because you forgot to take some of your regular contraceptive pills or did not use your patch or vaginal ring correctly, you should take your next contraceptive pill, insert a new ring or apply a new patch within 12 hours of taking the emergency contraceptive pill.

You should then continue taking your regular contraceptive pill as normal.

You will need to use additional contraception, such as condoms, for:

  • the next seven days if you use the patch, ring or combined pill
  • the next two days if you use the progestogen-only pill

Other medicines

The emergency contraceptive pill may interact with some other medicines. This includes some immunosuppressant drugs (medicine that weakens the immune systrem), such as ciclosporin, and medicines used to treat liver disease.

There should be no interaction between the emergency contraceptive pill and most antibiotics.

If you want to check that your medicines are safe to take with the emergency contraceptive pill, ask your GP or a pharmacist. You should also read the patient information leaflet that comes with your medicines.

Last reviewed: 20/05/2010

Next review due: 20/05/2012

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