What are the disadvantages of the progestin only pill?

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  • Women may not have regular periods while they are taking progestin-only pills. Periods may become irregular, light, or more frequent or may stop altogether. This usually improves within the first 6 months of use, and is not harmful, but some women may find it annoying. Changing to a different brand of pill may help but there is not data on this.
  • The progestin-only pill does not protect against sexually transmitted infections, so women may need to use condoms as well.
  • Women must remember to take the pill at the same time every day.