What are Feminax tablets used for?
Feminax tablets contain 250 mg of naproxen. This medicine is used to treat period pain
(also called menstrual pain or dysmenorrhoea)
• Naproxen belongs to a group of painkillers called Non-Steroidal Anti-inflammatory
Drugs (also called NSAIDs).
• Other medicines in this group include ibuprofen and aspirin.
• Swallow the tablets whole with a drink of water. Do not chew or crush them.
• Take the tablets with or after food.
• Only take the tablets for as long as you need them for the period pain. You may
not need to take the tablets all the time for all 3 days. If you still have pain after 3
days of treatment, talk to your doctor. Do not take the tablets for more than 3
days in any one period (cycle).
• If you see a doctor, pharmacist or nurse or go into hospital, tell them you are
taking this medicine.
• Overdose: If you (or someone else) takes too many tablets, go to the nearest
hospital casualty department or your doctor straight away
See our pain relief range
Like all medicines, these tablets can cause side effects, although not everybody gets
them. If you have any side effect, you should seek advice from your doctor, pharmacist
or other healthcare professional.
If any of the following happen to you, stop taking the tablets and tell a doctor,
pharmacist or nurse immediately:
• Sickness or being sick (possibly with blood), diarrhoea (sometimes with blood
and mucus), dark “tarry” stools.
• Stomach pain, indigestion, stomach ulcers and bleeding in the stomach.
• Worsening of stomach problems (ulcerative colitis or Crohn’s disease).
• Sore mouth or unusual painful mouth ulcers.
• Allergic reactions like asthma, wheezing or difficulty breathing. This may be severe.
• Blood in the urine, more or less urine than normal or cloudy urine. Pain around
the kidneys (lower side of your back).
• Severe blisters and bleeding of the skin, nose and mouth (Stevens-Johnson syndrome)
• Skin problems including rashes, itching, nettle rash or a bruise-like rash. There may
also be blistering and flaking of the skin.
• Swelling of the face, lips, tongue and throat (causing difficulty swallowing or breathing).
• Jaundice (yellowing of the skin or whites of the eyes), and/or pale coloured
stools and dark urine.
• Fits (convulsions), altered vision, pins-and-needles or numbness, confusion,
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