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Micronor is an oral contraceptive pill. The tablets are known as the 'mini-pill' (containing only progestin).

What is Micronor?

Micronor is an oral contraceptive pill. The tablets are known as the ‘mini-pill’ (containing only progestin).

How does Micronor work?

Micronor contains the active ingredient norethisterone. Norethisterone is a feminine, synthetic progestogens hormone, which has approximately the same effect as the natural progesterone hormone. Hormones play an important role in the fertility cycle. The active ingredients ensure three ways to prevent pregnancy:

  • It makes your body think that ovulation has already occurred, it prevents ovulation.
  • The hormones affect the production of natural cervical mucus. It increases the thickness of this mucus. Sperm will not be able to reach the uterus as well.
  • The change in quality of the endometrial layer prevents implantation of a fertilized egg.

What is it used for?

You use Micronor to prevent pregnancy. It is a one-phase pill, there are no monthly bleedings anymore, but there may be occasional spontaneous bleedings. Once or twice a year is normal.

Dosage and method of administration

You take the pill, in the form of a tablet, daily, without any intermissions, for 28 days. Micronor is offered in strips of 28 tablets, and each of them are marked with a day of the week. Follow the direction of the arrows on the strip and start your next strip the day after the end of the previous strip. You start taking the pill on the first day of your menstrual cycle (first day of your period). Note: Take the pill everyday at the same time, inconsistent use may alter the contraceptive effect negatively.

Side effects

Healthy women who do not smoke virtually run no risk of serious side effects. Sometimes, however, some experience side effects. If these persists for longer than three months, it makes sense to contact a doctor. The following side effects may occur when using Micronor.

  • Breakthrough bleedings
  • Change in vaginal discharge
  • Nausea and vomiting


A contraceptive pill will not protect you against sexually transmitted diseases. It is important to ensure that Micronor is the right contraception for you.Gedarel is suitable for most healthy young women, but it should not be taken when you are pregnant. For a complete list, see the leaflet in the package.

Alternative medication

The birth control pill Noriday contains the same active ingredient. Primolut N tablets are used for the treatment of menstrual disorders and contain a high dose of norethindrone.