Is it safe to use the MCUK with an IUD or IUS (coil)?

We know that there are MCUK® users who are happily using their MCUK alongside an IUD/IUS (coil), however there have been some instances where an IUD/IUS has become dislodged when using the devices together. This may be due to anatomical factors (e.g. a low cervix), usage issues (e.g. wearing the MCUK too high) or simply that the IUD/IUS has been naturally rejected by the body. One in twenty IUD/IUS will be expelled, most commonly, in the first 3 months after the device has been inserted. These expulsions happen most frequently during menstruation.

If you are using the MCUK menstrual cup alongside an IUD/IUS, check you can still feel the IUD/IUS strings after each period. If you cannot feel them or think that your IUD/IUS has moved or is causing/has caused you pain, use another form of contraception such as a condom until you have had your IUD/IUS checked by a doctor or medical professional.

If you are thinking about using the MCUK menstrual cup alongside an IUD/IUS, consult your doctor, IUD/ IUS fitter, or gynaecologist first. If you would like to take a MCUK® usage guide to your consultation, please contact us.

Please also consider the following information:

  • There should always be a space between the MCUK and the cervix. If you have a low sitting cervix there may not be enough room for the MCUK to sit safely and work effectively alongside your IUD/IUS.
  • The Mcuk is designed to be worn as low as it will comfortably sit in the vagina and form a light seal with the walls of the vagina (read more about MCUK positioning).
  • It is important to release the seal before removing the MCUK.


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