Primolut n tablets – Information, specialists, frequent questions.

Usage of Primolut n tablets

PRIMOLUT N contains the active ingredient norethisterone 5mg. The other ingredients contained in Primolut N are lactose monohydrate, maize starch, and magnesium stearate. The AUST R number for Primolut N is 10706 for the bottles and 134491 for the blister strip.

Primolut N comes in glass bottles or blister strips containing 30 tablets.

Primolut N is a so-called progestogen, a hormonal product having similarity with the natural female hormone progesterone. Primolut N is used for timing of menstruation and to treat disturbances of the monthly bleeding (dysfunctional bleeding), lack of the monthly bleeding (primary and secondary amenorrhoea), premenstrual complaints (premenstrual syndrome), in combination with oestrogen hormone replacement therapy, and endometriosis (a disease leading to complaints caused by womb-lining tissue growing outside the womb, the use of Primolut N leads to shrinking of this unwanted tissue).

Special precautions

Do not take Primolut N:

  • If you are hypersensitive (allergic) to norethisterone or any of the other ingredients of Primolut N.
  • If you are pregnant or think you might be pregnant.
  • If you are breast-feeding.
  • If you have a disorder affecting the blood circulation (thromboembolic processes). In particular those conditions relating to thrombosis (the formation of a blood clot) in the blood vessels of the legs (deep vein thrombosis), the lungs (pulmonary embolism), the heart (heart attack) or the brain (stroke) or other parts of the body. [ See “Primolut N and thrombosis” below]
  • If you suffer or have suffered from any disease of the heart or blood vessels.
  • If you have diabetes mellitus with blood vessel damage.
  • If you suffer or have suffered from a severe liver disease (as long as your liver function values have not returned to normal). Symptoms of a liver disease may be, for instance, yellowing of the skin and/or itching of the whole body.
  • If you have or have had a benign or malignant liver tumor.
  • If you suffer or have suffered from a malignant sex hormone-dependent tumor such as cancer of the breast or the genital organs.
  • If you suffer from a condition called Dubin-Johnson syndrome or Rotor syndrome.
  • If you have vaginal bleeding or blood in your urine for which a cause has not been identified.
  • If you have breast disease for which a cause has not been identified.
  • If you have had a miscarriage.

If any of these conditions appear for the first time while using Primolut N, stop taking it at once and consult your doctor.

Do not take the tablets if the pack appears to have been tampered with or the tablets don’t look right.

If Primolut N is used in the presence of any of the conditions listed below you may need to be kept under close observation. Your doctor can explain this to you. Therefore, if any of these apply to you, tell your doctor before starting to use Primolut N:

  • you smoke
  • you have diabetes
  • you are overweight
  • you have had a thrombosis/embolism (blood clot or artery blocked by a moving clot or substance) [see “Primolut N and thrombosis” below]
  • anyone in your immediate family has had a thrombosis i.e. a moving blood clot in the circulation (venous thromboembolism in a sibling or a parent at a relatively early age) [see “Primolut N and thrombosis“ below]
  • you have high blood pressure
  • anyone in your immediate family has had breast cancer
  • you have liver disease or a liver tumor [see” Primolut N and cancer” below]
  • you have or have had chloasma (yellowish-brown pigmentation patches on the skin, particularly of the face); if so, avoid too much exposure to the sun or ultraviolet radiation
  • you have a history of psychic depression
  • you have epilepsy
  • you suffer from migraine
  • you have asthma
  • you have kidney disease
  • you have heart disease

If any of the above conditions appear for the first time, recur or worsen while using Primolut N, you should contact your doctor.

The tablets are to be swallowed whole with some liquid.

If you have sexual intercourse, you should use non-hormonal methods (e.g. barrier methods) of contraception. If you think you might have fallen pregnant despite such protective measures, stop taking the tablets and see your doctor. He/she will check you are not pregnant before you can recommence tablet taking.

Your doctor will advise you on how to take your tablets. The dosage will vary depending on why you have been given this medicine. The following dosages are recommended:

Dysfunctional bleeding (Disturbances of your period)

Take 1 tablet 3 times daily for 10 days. In most cases bleeding will stop within 1 to 3 days, but Primolut N must be taken for the full 10 days. About 2 to 4 days after you stop taking the tablets, withdrawal bleeding will occur with the intensity and duration of normal menstruation.

Occasionally, slight bleeding may reoccur after the initial bleeding stops. If this happens do not stop taking the tablets. Keep taking the tablets for the full 10 days.

If vaginal bleeding does not stop, despite taking the tablets correctly or if, after an initial suspension of bleeding, fairly heavy bleeding reoccurs while you are taking the tablets, you should contact your doctor. Your doctor will need to consider other causes for the bleeding. To prevent dysfunctional bleeding from re-occurring your doctor may decide that you should take Primolut N regularly (1 tablet 1 to 2 times daily from the 16th to the 25th day of the cycle (1st day of the cycle = 1st day of the last bleeding). Withdrawal bleeding occurs a few days after the last tablet intake. If you are unsure about when to take the tablets ask your pharmacist or doctor.

Primary and secondary amenorrhoea (lack of a period)

Hormone treatment of secondary amenorrhoea can be carried out only after the exclusion of pregnancy. Primary or secondary amenorrhoea is sometimes caused by a prolactinoma (an alteration of a gland in the brain producing increased amounts of a hormone-like substance) which needs to be excluded by your doctor before starting treatment with Primolut N.

Your doctor will prescribe you an estrogen (usually for 14 days) before you begin treatment with Primolut N. You then take 1 tablet of Primolut N 1 to 2 times daily for 10 days. Withdrawal bleeding occurs a few days after taking the last tablet.

If sufficient estrogen production by your body has been achieved, your doctor may try to stop the estrogen treatment and to induce cyclical bleeding by just administering 1 tablet of Primolut N twice daily from the 16th to the 25th day of the cycle. If you are unsure about when to take the tablets ask your doctor or pharmacist.

Premenstrual syndrome

One tablet of Primolut N taken 1 to 3 times daily during the 2nd half (luteal phase) of the cycle may relieve or improve premenstrual symptoms such as headaches, depressive moods, water retention, and a feeling of tension in the breasts.

Timing of menstruation

Monthly menstrual bleeding can be delayed by taking Primolut N. However, this method should be used by you only if you are not at risk of pregnancy during the treatment cycle.

Dosage: Take 1 tablet Primolut N 2 to 3 times daily for no longer than 10 to 14 days, beginning about 3 days before expected menstruation. Bleeding will occur 2 to 3 days after you stop taking the tablets.


Treatment should begin between the first and 5th day of the cycle with 1 tablet Primolut N twice daily. In the event of spotting, the dose can be increased to 2 tablets twice daily. If bleeding stops, dose reduction to the initial dose should be considered. Treatment is to be continued for at least 4 to 6 months. With uninterrupted daily intake, ovulation and menstruation do not usually occur. After discontinuation of hormone treatment withdrawal bleeding will occur.

Adverse and side effects

Like all medicines, Primolut N can have side effects. Tell your doctor or pharmacist as soon as possible if you do not feel well while you are taking Primolut N.

Undesirable effects are more common during the first months after the start of intake of Primolut N, and subside with duration of treatment. In addition to the adverse effects listed in the section entitled “WHAT DO YOU NEED TO KNOW BEFORE USING PRIMOLUT N?” the following undesirable effects have been reported in users of Primolut N, although these effects may not necessarily be caused by Primolut N:

In the indication of endometriosis, changes in bleeding pattern including irregular bleeding, scanty bleeding and the absence of bleeding may occur.

Other side effects that have been reported in users of Primolut N are:

Abnormal vision, nausea, headache, fluid retention, migraine, shortness of breath and hypersensitivity reactions (e.g rash, hives).

The following events although not reported for Primolut N, have been associated with the use of other progestogens:

Anaphylaxis and anaphylactoid-like reactions, thrombophlebitis and pulmonary embolism, nervousness, problems with sleeping, drowsiness, tiredness, depression, dizziness and tremor. Some patients may complain of pre-menstrual type depression. Hives, itchiness, rash, acne, hirsutism, hair loss and sweating.

Irregular uterine bleeding, spotting and lack of menstruation. Breast tenderness and discharge. Changes in cervical excretions and secretions. High fever, Cushing’s syndrome, weight gain. Moderate elevation of blood pressure, transient elevation of certain liver enzymes, elevations of serum calcium and potassium levels, and increases in white cell and platelet counts.

Do not be alarmed by this list of possible side effects. You may not experience any of them. This is not a complete list of side effects. If you notice any side effects not mentioned in this leaflet, please inform your doctor or pharmacist.

Questions about Primolut n tablets

Our experts have answered 9 questions about Primolut n tablets

Dr Raouf Farag
Dr Raouf Farag
Both Minipills and Primolut-N contains progesterone in form of Norethindrone. Minipills contain 0.35 mg Norethindrone
Microlut-N cotain 5 mg Norethindrone
Minipills low dose progesterone…
1 answers

Dr Philip Thomas
Dr Philip Thomas
Brighton East
You need to be reassessed ASAP by a gynaecologist, and to have an ultrasound and probably another hysteroscopy D&C. It sounds as if the ablation has "worn off" . The norethisterone…
1 answers

Dr Raouf Farag
Dr Raouf Farag
If you have significant rise in you blood pressure and tachycardia, inform your doctor immediately as you will need to stop the medication .Further assessment is crucial and there are other non-hormonal…
1 answers

What professionals prescribe Primolut n tablets?

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