Acemetacin capsules for pain and inflammation
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSLast updated 29 mars 2023
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Clinical author's note Michael Stewart 17/3/2020: Emflex® capsules were discontinued in the UK in February 2018. At the time of review there are no branded or generic products containing acemetacin available in the UK. Acemetacin may still be available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
Acemetacin is a medicine called a non-steroidal anti-inflammatory drug. It is also known as 'an NSAID'.
Before you take acemetacin, tell your doctor if you have ever had an allergic reaction to any other anti-inflammatory painkiller.
It is usual to take two or three capsules a day - your doctor will tell you which of these is right for you. Take each of the capsules at a mealtime, or with a snack.
At a glance
Acemetacin is an anti-inflammatory painkiller (NSAID) used to relieve pain and reduce inflammation.
It is available as capsules, typically taken twice daily with food.
Take acemetacin with food to help protect your stomach.
If you have asthma, acemetacin can worsen symptoms like wheezing or breathlessness.
Stop taking acemetacin and see a doctor if you have breathing difficulties.
Seek medical advice if you pass blood or black stools, or have severe tummy pains.
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About acemetacin
Typ av medicin | Ett icke-steroid antiinflammatoriskt läkemedel (NSAID) |
Används för | Relief of pain and inflammation in adults |
Även kallad | Emflex® (discontinued) |
Tillgänglig som | Kapslar |
Anti-inflammatoriska smärtstillande medel like acemetacin are also called non-steroidal anti-inflammatory drugs (NSAIDs), or sometimes just 'anti-inflammatories'. Acemetacin is prescribed to ease pain and reduce inflammation in people with painful muscles or joints. Typical conditions it is prescribed for include artros, reumatoid artrit och ankyloserande spondylit. It is also prescribed to ease pain after surgical operations.
Acemetacin works by blocking the effect of natural substances called cyclo-oxygenase (COX) enzymes. These enzymes help to make other chemicals in the body, called prostaglandins. Some prostaglandins are produced at sites of injury or damage, and cause pain and inflammation. By blocking the effect of COX enzymes, fewer prostaglandins are produced, which means pain and inflammation are eased.
Before taking acemetacin
Tillbaka till innehållSome medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking acemetacin, it is important that your doctor knows:
Om du någonsin har haft en allergisk reaktion mot någon annan NSAID (såsom aspirin, naproxen, diklofenak och indometacin), eller mot någon annan medicin.
If you have ever had a problem with bleeding from the stomach or intestines, such as from a peptic or duodenal ulcer.
Om du har astma eller någon annan allergisk sjukdom.
Om du har en hjärtsjukdom eller problem med dina blodkärl eller cirkulation.
Om du är gravid, försöker bli gravid eller ammar.
Om du någonsin har haft problem med blodkoagulation.
Om du har en inflammatorisk tarmsjukdom som Crohns sjukdom eller ulcerös kolit.
Om du har en bindvävssjukdom som systemisk lupus erythematosus. Detta är ett inflammatoriskt tillstånd som också kallas lupus eller SLE.
If you have any of the following conditions: high blood pressure; epilepsy; Parkinsonism; a mental health problem.
Om du har några problem med hur din lever fungerar, eller om du har några problem med hur dina njurar fungerar.
Om du tar några andra läkemedel. Detta inkluderar alla läkemedel du tar som finns att köpa utan recept, samt växtbaserade och komplementära läkemedel.
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How to take acemetacin
Tillbaka till innehållBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about acemetacin, and it will also provide you with a full list of the side-effects which you could experience from taking it.
Take acemetacin exactly as your doctor tells you to. The usual dose for adults is one 60 mg capsule taken twice daily, preferably morning and evening. If it is necessary, your doctor may increase the dose to one capsule three times daily.
Take acemetacin with food; during a mealtime is ideal. This will help to protect your stomach from side-effects such as indigestion and stomach irritation.
Swallow the capsule whole with a drink of water. Do not chew or open the capsules.
Om du glömmer att ta en dos, ta den så snart du kommer ihåg (om det inte nästan är dags för din nästa dos, i så fall ta nästa dos när det är dags och hoppa över den glömda dosen). Ta inte två doser tillsammans för att kompensera för en missad dos.
Få ut det mesta av din behandling
Tillbaka till innehållYour doctor will try to prescribe you the lowest dose for the shortest time in order to reduce the risk of side-effects. If you need to take acemetacin over a period of time, your doctor may want to prescribe another medicine along with it to protect your stomach from irritation.
Försök att hålla alla regelbundna möten med din läkare. Detta är så att din läkare kan följa upp din utveckling.
If you have asthma, symptoms such as wheeze or breathlessness can be made worse by anti-inflammatories such as acemetacin. If this happens to you, you should stop taking the capsules and see your doctor as soon as possible.
Det är känt att det finns en liten ökad risk för hjärt- och kärlproblem hos personer som tar vissa antiinflammatoriska smärtstillande medel under lång tid. Din läkare kommer att förklara detta för dig och kommer att ordinera den lägsta lämpliga dosen för den kortaste tiden för att minska risken. Ta inte mer än den rekommenderade dosen.
If you buy any medicines, check with a pharmacist that they are safe to take with an anti-inflammatory like acemetacin. This is because you should not take these capsules with any other anti-inflammatory painkiller, some of which are available in cold and flu remedies which can be bought 'over the counter'.
Om du ska genomgå en operation eller tandbehandling, informera den som utför behandlingen om vilka mediciner du tar.
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Can acemetacin cause problems?
Tillbaka till innehållAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with acemetacin. The best place to find a full list of the side-effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below. Speak with your doctor or pharmacist if any of the following continue or become troublesome.
Common acemetacin side-effects | Vad kan jag göra om jag upplever detta? |
Indigestion, heartburn (reflux), stomach pain, wind | Remember to take your doses with a meal or with a glass of milk. If the discomfort continues, speak with your doctor |
Feeling sick (nausea) or being sick (vomiting) | Håll dig till enkla måltider - undvik fet eller kryddstark mat |
Feeling dizzy or tired | Kör inte och använd inte verktyg eller maskiner när du är påverkad |
Huvudvärk | Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. If the headaches continue, speak with your doctor |
Constipation or diarrhoea | Drink plenty of water |
Feeling agitated, changes to some blood tests to do with the lliver | If you are concerned about these, speak with your doctor |
Viktigt: if you experience any of the following less common but possibly serious symptoms, stop taking acemetacin and contact your doctor for advice straightaway:
Om du har några andningssvårigheter som väsande andning eller andfåddhet.
Om du har några tecken på en allergisk reaktion, såsom svullnad runt munnen eller ansiktet, eller ett allvarligt kliande hudutslag.
Om du har blod eller svarta avföringar, kräks blod eller har svåra magsmärtor (buksmärtor).
If you experience any other symptoms which you think may be due to the capsules, speak with your doctor or pharmacist for further advice.
How to store acemetacin
Tillbaka till innehållFörvara alla läkemedel utom räckhåll och synhåll för barn.
Förvara på en sval, torr plats, borta från direkt värme och ljus.
Viktig information om alla läkemedel
Tillbaka till innehållViktig information om alla läkemedel
Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå till akutmottagningen på ditt lokala sjukhus. Ta med behållaren, även om den är tom.
Denna medicin är för dig. Ge den aldrig till andra människor även om deras tillstånd verkar vara detsamma som ditt.
Behåll inte föråldrade eller oönskade mediciner. Ta dem till ditt lokala apotek som kommer att ta hand om dem åt dig.
Om du har några frågor om denna medicin, fråga din apotekare.
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Vanliga frågor
What kind of pain is acemetacin best for?
Acemetacin is typically prescribed to relieve pain and reduce inflammation in muscles and joints. This includes conditions like osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis. It can also be used to ease pain experienced after surgical operations.
How does acemetacin work to relieve pain and inflammation?
Acemetacin works by blocking the action of natural substances in your body called cyclo-oxygenase (COX) enzymes. These enzymes are involved in producing other chemicals called prostaglandins. Some prostaglandins cause pain and inflammation at sites of injury. By reducing the number of prostaglandins, acemetacin helps to ease both pain and inflammation.
Why is it important to take acemetacin with food?
Taking acemetacin with food, ideally during a meal, helps to protect your stomach. This can reduce the risk of side-effects such as indigestion and stomach irritation.
Are there any over-the-counter medicines I should avoid while taking acemetacin?
Yes, you should avoid taking acemetacin with any other anti-inflammatory painkiller. Some of these are found in 'over-the-counter' cold and flu remedies. It's always best to check with a pharmacist if any over-the-counter medicines are safe to take with acemetacin.
What should I do if I forget to take a dose of acemetacin?
If you forget a dose, take it as soon as you remember. However, if it's almost time for your next dose, you should just take the next dose when it's due and skip the one you missed. Do not take two doses at once to make up for a forgotten dose.
What are some less common but serious side-effects I should watch out for?
Although less common, some serious side-effects require immediate medical attention. You should stop taking acemetacin and contact your doctor straight away if you experience breathing difficulties (like wheezing or breathlessness), signs of an allergic reaction (such as swelling around your mouth or face, or a severe itchy skin rash), or if you pass blood or black stools, bring up blood, or have severe tummy pains.
Can acemetacin affect my heart or blood vessels?
There is a small increased risk of heart and blood vessel problems for people who take certain anti-inflammatory painkillers long-term. Your doctor will discuss this with you and will aim to prescribe the lowest suitable dose for the shortest possible time to reduce this risk. It's important not to exceed the recommended dose.
Vidare läsning och referenser
- Manufacturer's PIL, Emflex® Capsules; Merck, The electronic Medicines Compendium. Dated March 2016.
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About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
About the reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
Artikelhistorik
Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
Nästa granskning: 28 sept 2027
29 mars 2023 | Senaste versionen

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