Nomegestrol
Is It Right for You?
A complete guide to Nomegestrol — what it treats, how it works, dosages, side effects, and when a clinician may prescribe it following an online consultation.
What Is Nomegestrol?
Nomegestrol is a progestogen used in contraception and in some menopause (HRT) treatments. In a combined pill it is paired with an oestrogen to prevent pregnancy, and in HRT it is given with oestrogen to protect the womb lining.
It is found in combined pills with estradiol, such as Zoely, and in some HRT products. The combined pill is taken daily, usually in a cycle of active tablets followed by inactive tablets.
Nomegestrol-containing products are prescription-only medications in the UK. A licensed clinician can review your suitability and medical history through a telehealth consultation and prescribe where appropriate.
What Conditions Is Nomegestrol Used For?
Nomegestrol is mainly used for:
preventing pregnancy as the progestogen in a combined pill with estradiol.
given with oestrogen to protect the womb lining during menopause treatment.
helping give a regular, predictable bleeding pattern in combined pills.
As a combined hormonal method, the contraceptive pill carries a small increased risk of blood clots. Seek urgent help for a swollen, painful leg, chest pain, or sudden breathlessness, and tell your clinician about clot risk factors.
How Does Nomegestrol Work?
In the combined pill, nomegestrol works with the oestrogen to prevent pregnancy, mainly by stopping the ovaries releasing an egg (ovulation).
It also thickens the mucus at the neck of the womb and thins its lining, adding to the contraceptive effect. The oestrogen helps control the bleeding pattern.
In HRT, nomegestrol balances the effect of oestrogen on the womb lining, protecting it from thickening, while the oestrogen relieves menopause symptoms.
Dosages & Administration
The correct dose depends on the type and severity of infection, age, weight, and kidney function. Always follow your clinician's instructions. The table below is for general reference only.
Administration Tips
Take one tablet at the same time each day in the order shown in the pack, and start each new pack as directed.
If you miss pills, vomit, or have severe diarrhoea, follow the missed-pill advice and use extra precautions such as condoms for the time stated.
Side Effects of Nomegestrol
Side effects are usually mild and often settle with time. Changes in bleeding are common, especially at first.
- Irregular bleeding, spotting, or absent periods
- Acne
- Headache
- Breast tenderness
- Mood changes
- Weight changes
- Signs of a blood clot - swollen, painful leg, chest pain, breathlessness
- Signs of a stroke - sudden weakness, speech or vision problems
- Severe migraine or migraine with aura
- Yellowing of the skin or eyes
- Severe allergic reaction
Combined hormonal methods carry a small increased risk of blood clots. Learn the warning signs - a swollen painful calf, chest pain, sudden breathlessness, or coughing up blood - and seek urgent medical help if they occur.
Drug Interactions
Always disclose all prescription drugs, over-the-counter medicines, vitamins, and supplements to your clinician or pharmacist before starting nomegestrol.
Some epilepsy medicines, rifampicin, and St John's Wort can reduce effectiveness; another method may be advised.
These can affect hormone levels; your clinician will advise on suitability and precautions.
Combined methods can lower lamotrigine levels, which may affect seizure control; specialist advice may be needed.
Tell your clinician about other hormones you take so treatment can be managed safely.
Important Warnings
Tell your clinician about smoking, migraine with aura, obesity, immobility, or a personal or family history of clots, as these affect whether a combined method is suitable.
Nomegestrol-containing contraceptives prevent pregnancy but do not protect against sexually transmitted infections. Use condoms as well if needed.
Certain conditions make combined methods or HRT unsuitable. Share your full medical history, including migraines, clotting, and cancers, with your clinician.
Your blood pressure and suitability are reviewed periodically, and any new symptoms or medicines should be reported.
Speak to a Clinician About Treatment
Getting advice no longer means sitting in a waiting room. Through The GP Service, you can consult with a licensed clinician in minutes — from home, on your lunch break, or wherever works for you. If treatment is clinically appropriate, your clinician can issue a prescription during the consultation. A consultation does not guarantee a prescription.
The treatment you need, when you need it.
Nomegestrol FAQs
Yes. A licensed clinician can review your medical history and suitability through a telehealth consultation and prescribe a nomegestrol-containing pill or HRT where appropriate.
Some combined pills containing nomegestrol commonly cause lighter or absent periods, which is usually harmless. Tell your clinician if you are concerned.
As a combined method it carries a small increased clot risk. Your clinician will check your individual risk factors before prescribing.
Follow the missed-pill instructions in your leaflet, take the pill as soon as you can, and use extra precautions such as condoms for the time stated.
Yes. With oestrogen, nomegestrol can protect the womb lining as part of HRT. A clinician can advise whether it suits your menopause treatment.
Some people notice skin changes or weight changes, but evidence for significant weight gain is limited. Discuss any concerns with your clinician.