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Feminax Ultra
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Feminax Ultra is a targeted treatment containing the non-steroidal anti-inflammatory drug naproxen designed to alleviate primary dysmenorrhoea and painful menstrual cramps for adult women.
- Contains naproxen for long-lasting relief from period pain
- Targets menstrual cramps and associated muscular aches
- Available via a convenient online consultation with a prescriber
- Discreet home delivery from a UK-registered pharmacy
More information
"Feminax Ultra is typically prescribed to provide effective relief from the symptoms of primary dysmenorrhoea, commonly known as period pain. This medication targets the prostaglandins responsible for uterine contractions, helping to reduce the intensity of menstrual cramps throughout the cycle." - Rachael Clarke MRCPharm MFRPSI FRSPH (GPHC Number: 2061366)
You can buy Feminax Ultra through our streamlined online platform by completing a short health consultation for review by a registered prescriber. Once your request is approved, your medication is shipped directly from our registered pharmacy (GPHC Number: 9011560) in discreet packaging to ensure your privacy.
The price of Feminax Ultra at Mail my Meds is competitive and reflects our commitment to providing affordable healthcare access to patients across the UK. Our pricing structure includes the cost of the online clinical review and the medication itself, with no hidden fees added during the checkout process.
We provide a range of reliable delivery options to ensure your treatment reaches you as quickly as possible. Every order is tracked and sent in plain, unbranded packaging, allowing you to receive your period pain relief at home or work with complete peace of mind.
Feminax Ultra is a clinically proven medication used to treat the symptoms of period pain, such as abdominal cramps, backache and heavy discomfort. It belongs to a group of medicines called Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) which are highly effective at managing the acute pain associated with the menstrual cycle.
The active ingredient in this medication is naproxen, which is provided in a 250mg strength per gastro-resistant tablet. Naproxen is specifically chosen for period pain because it has a longer duration of action compared to many other over-the-counter painkillers, meaning you need to take fewer doses.
Many users report that Feminax Ultra provides more sustained relief for menstrual cramps than standard paracetamol or ibuprofen. Patients often highlight the convenience of the twice-daily dosing schedule, which helps them maintain their daily routine without the constant interruption of recurring pain.
You should always read the Patient Information Leaflet (PIL) included with your medication before you start the treatment. This document contains essential details regarding the formulation, specific safety instructions and a comprehensive list of known interactions or contraindications.
Feminax Ultra works by blocking the production of prostaglandins, which are the chemicals in the body that cause the muscles of the womb to contract and cause pain. By reducing the level of these chemicals, the medication eases the intensity of the contractions and provides significant relief from cramping and inflammation.
You should swallow the tablets whole with a glass of water, ideally with or after food to protect your stomach lining. It is important not to crush or chew the tablets, as they are specially coated to release the active ingredient in the correct part of your digestive system.
The standard dosage for adult women between the ages of 18 and 50 involves taking two tablets on the first day of pain followed by one tablet 6 to 8 hours later if needed. On subsequent days, the usual dose is one tablet every 8 to 12 hours, ensuring you do not exceed three tablets in any 24-hour period.
While many people use this medication without issues, some may experience side effects such as indigestion, heartburn, headaches or dizziness. In rare cases, NSAIDs can cause more serious stomach irritation, so you should stop use and consult a professional if you notice any severe abdominal pain or dark stools.
Feminax Ultra is not suitable for everyone, particularly those with a history of stomach ulcers, asthma or heart conditions. You must inform our prescribers if you are taking other medications, especially blood thinners or other anti-inflammatory drugs, to avoid potentially harmful interactions.
| Feature | Feminax Ultra (Naproxen) | Standard Ibuprofen | Paracetamol |
|---|---|---|---|
| Type of Medicine | NSAID (Long-acting) | NSAID (Short-acting) | Analgesic |
| Dosing Frequency | Every 8-12 hours | Every 4-6 hours | Every 4-6 hours |
| Targets Cramps | Yes - High efficacy | Yes - Moderate efficacy | Limited effect on cramps |
Can I take Feminax Ultra with paracetamol?
Yes, you can generally take paracetamol alongside Feminax Ultra because they work in different ways, but you must never take it with ibuprofen or other NSAIDs.
How quickly does it start working?
Most women begin to feel the pain-relieving effects within 30 to 60 minutes of taking the first dose.
Can I use this if I am trying to get pregnant?
You should consult your doctor before using naproxen if you are planning a pregnancy, as NSAIDs can occasionally affect female fertility temporarily.
The information provided on this page is for general informational purposes only and should not replace seeking professional medical advice. Always consult a healthcare professional or your GP for personalised guidance regarding your health and any treatments you may be considering.
Our content is regularly reviewed by our team of medical experts to ensure it remains up to date, accurate and reliable. We follow strict clinical guidelines to provide you with the most current information regarding your prescriptions and health needs.

