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Period delay

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Only €25

Important, please read!

At a glance

Norethisterone 5mg tablets can be used to delay the start of your period. You start taking the tablets 4 to 5 days before your period is due, taking one tablet three times per day, and continue taking the tablets for as long as needed. You will usually experience your period bleed 2 to 3 days after stopping norethisterone, however this may be longer in some cases.

Women currently taking a contraceptive pill should not use norethisterone to delay their periods. For women who take a "fixed dose" combined oral contraceptive pill, the same effect can be achieved by starting the next pack of the pill immediately without the normal 7 day break. Taking two packs "back to back" in this way is safe if done occasionally. It is not advisable to link more than two packs without allowing a period.

A similar approach can be taken by women on bi-phasic or tri-phasic contraceptive pill by taking the last "phase" of the pills from the second pack immediately after finishing the first pack. Please consult your pharmacist if you are uncertain of the type of pill you are taking.


No symptoms apply.


Your HealthHero GP can prescribe norethisterone tablets to delay your period for up to 17 days. If period delay of less than 17 days is required, the tablets are taken for fewer days as needed.

Norethisterone is for occasional use only and should not be requested more than once every 4 months. If you find yourself requiring more frequent treatment or you need to delay your period by more than 17 days, you should arrange a consultation with a GP. Norethisterone is not a contraceptive and will not prevent pregnancy.

If you are taking any regular medication from the list below, you should consult with a GP before taking norethisterone. 

  • Medication for high blood pressure
  • Medication for epilepsy (e.g. phenytoin, carbamazepine)
  • The antibiotics minocycline, doxycycline, lymecycline, rifampicin or co-trimoxazole
  • Herbal preparations containing St. John"s Wort (hypericum perforatum)
  • Anti-inflammatory drugs (NSAIDs) for treating pain or inflammation
  • Aminoglutethimide
  • Ciclosporin
  • Treatment for HIV 
  • Treatment for cancer