Using Your Pharmacy
Can I delay my period with tablets from a pharmacy?
By Pick My Pharmacy Editorial · Updated 9 July 2026
How period-delay tablets work
A period starts when natural progesterone levels fall at the end of the menstrual cycle, triggering the womb lining to shed. Norethisterone is a synthetic progestogen: taking it keeps hormone levels topped up so the lining holds in place, and bleeding is postponed until you stop. The standard course is one 5mg tablet three times a day, started three days before the day your period is due — which means you need a reasonable idea of your usual cycle length for it to work. Starting too late is the most common reason it fails, and can result in breakthrough bleeding anyway. You can continue for up to around 17 days of delay; once you stop, a withdrawal bleed usually follows within two to three days, sometimes heavier than a normal period.
Where to get it and what it costs
Norethisterone for period delay is a prescription-only medicine, so a straightforward shelf purchase isn't possible — but you don't need a GP appointment either. GPhC-registered online pharmacies supply it after a clinical questionnaire reviewed by a prescriber, and a growing number of community pharmacies offer it in person under a patient group direction (PGD), meaning the pharmacist can supply it after a structured consultation. Either way, expect to pay privately — typically £15–£30 for the full course including the consultation, with price varying by pharmacy and how many days of delay you need. Order in good time: the course must start three days before your expected period, so leaving it until the week of travel risks missing the window. Your GP can also prescribe it, sometimes on the NHS at the usual prescription charge.
Who it doesn't suit — and why the questions matter
The consultation isn't a formality. Progestogens like norethisterone aren't suitable for everyone, and the screening questions check for genuine risks: a history of blood clots or clotting disorders, some liver conditions, certain cancers, pregnancy or the possibility of pregnancy, and unexplained vaginal bleeding all rule it out or need specialist advice first. Norethisterone is partly converted in the body to an oestrogen-like effect, which is why clot risk factors are taken seriously even for a short course. Common side effects are usually mild — bloating, breast tenderness, mood changes, spotting. Two things it does not do: it is not a contraceptive, so use your usual method, and it isn't a treatment for regularly skipping periods month after month — recurring use is a conversation for your GP.
Already on the pill? You may not need to pay
If you take the combined contraceptive pill, there's usually a free alternative worth knowing before you buy anything: running packs together. With a standard 21-day pill, finishing one pack and starting the next without the 7-day break typically delays the withdrawal bleed by a full pack; with everyday (ED) packs you skip the inactive pills. This is a recognised way to use the combined pill, but check with a pharmacist first, because the right approach depends on your specific pill — and it doesn't work with the progestogen-only (mini) pill, where bleeding patterns are less predictable. If you're not on hormonal contraception, norethisterone remains the standard route. This is general information, not medical advice — speak to a pharmacist or GP about what's right for you.
People Also Ask
When should I start period-delay tablets?
Three days before the day your period is expected, based on your usual cycle length. Starting later makes breakthrough bleeding more likely, so if your period is due imminently it may already be too late for this cycle — a pharmacist can advise.
Will delaying my period mess up my cycle?
Usually not. A withdrawal bleed normally arrives two to three days after your last tablet — it may be somewhat heavier than usual — and cycles typically return to their normal pattern afterwards.
Can I use norethisterone as contraception while I take it?
No. The dose used for period delay does not work as a contraceptive, so you can become pregnant while taking it. Keep using your normal contraception, and don't take norethisterone at all if there's any chance you're already pregnant.
Can I delay my period more than once a year?
Occasional use for a holiday, exam or event is the intended purpose. If you find yourself wanting to delay or skip periods regularly, talk to your GP — options such as continuous combined pill use may suit you better than repeated norethisterone courses.
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This article is general information for UK patients, not medical advice, and NHS rules and charges change — confirm current rules on nhs.uk or speak to a pharmacist or GP before acting. For urgent medical help call NHS 111, or 999 in an emergency. Price figures are indicative benchmarks from ourmethodology.