Acetic-acid derivative non-steroidal anti-inflammatory drug

Acemetacin (أسيميتاسين)

Acemetacin is a non-steroidal anti-inflammatory medicine partly converted to indometacin in the body. It relieves joint and soft-tissue pain and inflammation but can cause stomach ulcer or bleeding and heart or kidney problems, so exposure is kept to the minimum appropriate under a doctor's direction.

What it is used for

  • Relieving pain and inflammation in rheumatoid arthritis and other inflammatory joint disease
  • Relieving painful flares of osteoarthritis or inflammatory spinal disease
  • Treating selected attacks of acute gout
  • Relieving painful inflammation after injury or in soft tissues

How it is used

  • Take the capsule only as prescribed with water and follow the leaflet's advice about food
  • Swallow a modified-release capsule whole without crushing or chewing it
  • Do not combine it with ibuprofen, diclofenac, analgesic aspirin or another anti-inflammatory medicine
  • Use it for the shortest period set by the doctor and do not alter the dose yourself
  • Before starting, report any previous ulcer or bleeding, heart, kidney or liver disease and every medicine

Possible side effects

  • Indigestion, stomach pain or nausea
  • Diarrhoea or constipation
  • Headache or dizziness
  • Fluid retention, swelling or raised blood pressure
  • Rash or itching

Who should not use it

  • Allergy to acemetacin, indometacin, aspirin or another non-steroidal anti-inflammatory medicine
  • Active or recurrent stomach or bowel ulcer or bleeding, or previous bleeding caused by an anti-inflammatory
  • Severe heart, kidney or liver failure
  • The final trimester of pregnancy

Before and while using it

  • Black stools, vomiting blood or severe stomach pain can indicate bleeding or ulcer and needs emergency care
  • Chest pain, sudden weakness or difficulty speaking can indicate heart attack or stroke
  • Reduced urine, leg swelling or breathlessness can indicate kidney or heart injury
  • Blistering rash, peeling skin or facial swelling requires stopping and urgent help
  • It can mask fever and infection symptoms; deterioration during infection needs review
  • Older people and those with asthma, high blood pressure or bowel disease need closer monitoring

Medicine interactions

  • Anticoagulants, antiplatelets, corticosteroids and selected antidepressants increase bleeding risk
  • ACE inhibitors, angiotensin-receptor blockers and diuretics can increase kidney injury and weaken blood-pressure control
  • Lithium, methotrexate or digoxin levels can rise and cause toxicity
  • Other anti-inflammatory medicines and ciclosporin or tacrolimus increase stomach or kidney risk

Pregnancy and breastfeeding

  • Tell your doctor if you are pregnant or planning pregnancy; it is contraindicated in the final trimester and can affect pregnancy and fertility earlier
  • It is generally not recommended during breastfeeding and the doctor chooses a more suitable alternative

How to store it

  • Keep capsules in their pack as the leaflet directs, protected from moisture and heat and out of children's reach

Get medical help straight away if

  • Your face, lips or tongue swell, or you find it hard to breathe.
  • You get a severe rash, blistering or peeling skin.
  • A side effect worries you or doesn’t go away: contact your doctor or pharmacist.

Questions about this medicine?

Talk to a doctor by video, or send your question by text.

Source: Standard international medicine references

This guide is general information and doesn’t replace advice from your doctor or pharmacist. Don’t start, stop or change a medicine without asking them, and always read the leaflet in the pack.