The usual norethisterone dosage to delay a period is one 5mg tablet taken three times a day, starting three days before the date your period is expected. That is 15mg in total across the day, taken as three separate doses. Continue only for the duration authorised by your prescriber.
Norethisterone used for period delay is prescription-only and is not a contraceptive. A prescriber needs to check your planned dates, pregnancy possibility, medical history and other medicines before deciding whether it is suitable. After the final dose, menstruation usually follows within about three days, although the exact timing can vary.
What is the usual norethisterone dosage for period delay?
For postponement of menstruation, the licensed regimen is one 5mg tablet three times daily, beginning three days before the expected onset of menstruation. This norethisterone dosage to delay a period is the standard licensed regimen for this use.
Use the instructions printed on your dispensing label as your personal dosing instructions. Do not take all three tablets together, take extra tablets because you started late, or extend the course yourself because spotting occurs.
The key dosing points
- Tablet strength: 5mg.
- Dose each time: one tablet.
- Frequency: three times a day.
- Total usual norethisterone dosage per day for period delay: 15mg, split into three 5mg doses.
- Usual start: three days before the expected period.
- Course length: only the duration approved by the prescriber.
- After stopping: menstruation usually follows within about three days.
When should you start norethisterone before your period?
Start three days before the date your period is expected. For example, if your period is due on 18 August, the usual start date would be 15 August. The medicine needs to be started before bleeding begins for the licensed period-delay regimen. This start point is part of the norethisterone dosage to delay a period.
If your cycles are irregular, the expected date is uncertain, your period is due in fewer than three days or bleeding has already started, tell the prescribing service before taking the medicine. Do not compensate for a late start by increasing the norethisterone dosage per day.
Why starting three days early matters
Norethisterone postpones menstruation by maintaining progestogen activity before the uterine lining is shed. The licensed norethisterone dosage to delay a period is designed around this timing, so the start date is part of the regimen rather than an optional detail.
Starting later may make the result less predictable and does not create a reason to take extra tablets. If bleeding has already started, the question is no longer standard pre-period dosing; read whether norethisterone can stop a period after it has started and contact the prescribing service rather than changing the dose yourself.
How long does norethisterone take to work for period delay?
For period delay, it is more accurate to think in terms of the licensed start window than to promise a fixed number of hours. NHS Specialist Pharmacy Service guidance states that norethisterone should be started at least three days before the expected period for the effect to be seen. That timing is built into the norethisterone dosage to delay a period.
This means norethisterone is not an on-demand tablet that should be started after bleeding begins or just before an event. The practical planning point is to work backwards from the expected first day of your period, begin the prescribed course three days before that date, and keep taking the separate daily doses as directed.
Individual response can vary. If the period is due too soon for the usual start window, your cycles are difficult to predict, or bleeding begins despite treatment, contact the prescribing service instead of taking additional doses.
How to take norethisterone 5mg correctly
- Check the expected first day of your next period.
- Count back three days to identify the usual starting date.
- Take one 5mg tablet three times a day.
- Keep the three doses separate and reasonably spread across your waking day unless your label gives specific times.
- Continue only for the course length prescribed for you.
- Stop after the final prescribed dose rather than extending the course yourself.
Swallow the tablets with water and follow the dispensing label. The norethisterone dosage to delay a period should be followed as prescribed rather than converted into a different personal schedule. If you are unsure about the timing of a dose, ask a pharmacist or prescriber.
How should you space a three-times-daily dose?
Three times daily means three separate doses during the day. Do not take the full 15mg daily amount at once. Keep the doses reasonably spread across the hours you are awake unless your prescriber or dispensing label gives specific times. Spacing the doses correctly is part of following the norethisterone dosage to delay a period.
If travel or a time-zone change will disrupt the schedule, ask a pharmacist or prescriber how to maintain the prescribed regimen before you travel. Do not improvise by doubling, compressing or adding doses, because the norethisterone dosage to delay a period should stay consistent with the prescription.
How long can you take norethisterone to delay a period?
The course length depends on how long the delay is needed and whether treatment remains clinically appropriate. NHS Specialist Pharmacy Service guidance states that norethisterone can be taken for up to three to four weeks if necessary. The prescriber decides the appropriate duration for the individual, while the norethisterone dosage to delay a period remains based on separate 5mg doses three times daily.
A longer course changes the duration, not the prescribed dose per day. Do not use leftover tablets from an earlier prescription, share tablets or extend the course because you have extra tablets.
Planning the course around your dates
The requested course should cover the time from the prescribed start point until the point when it is acceptable for bleeding to return. The prescriber therefore considers both the expected period date and the date through which you want the delay to continue. Planning these dates is part of using the norethisterone dosage to delay a period correctly.
Because menstruation usually follows within about three days of finishing norethisterone, allow for that return-of-bleeding window when planning travel or an event. The exact timing varies, so it should not be treated as a guaranteed calendar date.
What should you do if you miss a norethisterone dose?
The patient information leaflet advises taking a forgotten tablet as soon as you remember and then continuing at the normal times. Do not take a double dose to make up for a missed tablet. A missed dose does not create a new norethisterone dosage to delay a period or justify extra tablets.
If you have missed several doses, are unsure when the next dose is due, or bleeding has started, contact a pharmacist or the prescribing service. Do not take extra tablets to try to make the period-delay effect stronger.
What if you start norethisterone too late?
Norethisterone for period delay should normally be started three days before the expected period. If the period is due in fewer than three days, has already started or you are already bleeding, contact the prescribing service before beginning treatment. Do not change the norethisterone dosage to delay a period to compensate for starting late.
Taking extra tablets does not compensate for a late start. The separate article on starting after bleeding has begun covers the already-started intent; this dosage guide remains the owner of the standard pre-period regimen.
How long after stopping norethisterone does bleeding start?
For postponement of menstruation, the official Summary of Product Characteristics states that menstruation usually follows within three days of finishing treatment. NHS Specialist Pharmacy Service guidance gives the same general expectation. This return-of-bleeding advice belongs with the norethisterone dosage to delay a period because it affects course planning.
The exact timing can vary between individuals, and the first bleed after treatment may not be identical to your usual period. This variation does not mean the norethisterone dosage to delay a period should be changed. If your period does not return and pregnancy is possible, seek medical advice and consider a pregnancy test before any further course. Norethisterone used for period delay does not prevent pregnancy.
Who may not be able to take norethisterone?
Norethisterone is not suitable for everyone. The prescriber needs to assess pregnancy possibility, unexplained vaginal bleeding, current or previous blood clots, heart or liver problems, porphyria, allergy history and other relevant conditions before supply.
You should also report migraines, epilepsy, asthma, heart or kidney problems, previous depression, planned surgery or prolonged immobility, and every prescription, non-prescription or herbal medicine you use.
Read the separate norethisterone side effects guide for fuller information about possible effects and warning symptoms. Seek urgent medical help for symptoms that could indicate a serious allergic reaction or a blood clot.
Can other medicines affect norethisterone?
Yes. Some medicines and herbal products can affect norethisterone or need extra clinical assessment. The product information lists interactions with medicines including some treatments for epilepsy, infections and HIV, as well as St John's wort and other medicines.
Tell the prescriber about everything you take. Do not stop a regular medicine or change its timing without professional advice.
Relevant Medicina treatment
Medicina Pharmacy currently displays Norethisterone 5mg - 7-Day Delay Request (30 tablets) at a total product price of £14.99. It is a prescription-only treatment and is supplied only when an authorised prescriber considers the medicine and requested dates clinically appropriate after an online assessment.
The Norethisterone 5mg treatment page remains the source of truth for current pack options, price and availability. Selecting a course or completing the questionnaire does not guarantee a prescription or supply.
Why choose Medicina
Pharmacy?
Norethisterone 5mg - 7-Day Delay Request (30 tablets)
Requested through an online consultation. A prescriber assesses your suitability before any supply is confirmed.
Lowest Price Guarantee
Includes FREE private prescriptionNo appointment needed • Confidential consultation • Cancel anytime
Receive it : Tomorrow
Order within : 24 hours
How to arrange period delay treatment online
A period-delay consultation should collect the information needed for a clinical decision, including the expected period date, requested duration, pregnancy possibility, medical history, blood-clot risk and current medicines. A prescriber then decides whether treatment can be supplied and confirms the norethisterone dosage to delay a period on the dispensing label.
You can also review the broader period delay treatment options if you need to understand where this dosage guide sits within the treatment journey.
Conclusion
The usual norethisterone dosage to delay a period is one 5mg tablet three times a day, starting three days before the expected period. Take the doses separately, follow the dispensing label and use only the course length authorised by your prescriber.
For timing, do not rely on a promise that the medicine "works immediately". Plan around the licensed three-day start window. After the final dose, menstruation usually follows within about three days, but the exact timing can vary.
If you miss a dose, start late, have already begun bleeding, develop concerning symptoms or are unsure about another medicine, contact a pharmacist or prescriber rather than altering the dose yourself.
Frequently Asked Questions
What is the usual norethisterone dosage to delay a period?
What is the norethisterone dosage per day for period delay?
When should I start norethisterone 5mg?
How long does norethisterone take to work for period delay?
What should I do if I miss a norethisterone dose?
How long can norethisterone be used to delay a period?
When will my period return after I stop norethisterone?
Disclaimer
This page provides general information and is not a substitute for personal medical advice. Norethisterone is a prescription-only medicine and is not suitable for everyone. Treatment requires an appropriate clinical assessment and may not be supplied. Follow your dispensing label and read the patient information leaflet provided with your medicine. Seek urgent medical help for serious symptoms such as signs of a severe allergic reaction or a possible blood clot.
