Macitentan för pulmonell arteriell hypertension
Opsumit
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSSenast uppdaterad 21 jun 2024
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Macitentan will be prescribed for you by a specialist doctor.
Take one 10 mg tablet each day. Swallow the tablet whole with a drink of water.
Common side-effects include respiratory infections and feeling tired or dizzy.
Överblick
Macitentan is a medicine for adults with pulmonary hypertension.
Det vidgar blodkärlen i lungorna, minskar trycket och förbättrar blodflödet.
Take one tablet daily, with or without food.
Women of childbearing potential must use effective contraception due to pregnancy risks.
Report any signs of liver damage to your doctor immediately.
Common side-effects include infections, headache, and feeling tired.
About macitentan
Typ av medicin | A vasodilator antihypertensive medicine |
Används för | Pulmonell hypertension |
Även kallad | Opsumit® |
Tillgänglig som | Tabletter |
Pulmonary arterial hypertension (PAH) is a condition where there is too high a blood pressure in the arteries which supply blood to your lungs from your heart. The arteries become narrowed so your heart has to work harder to pump blood to your lungs.
Macitentan relaxes the muscles in the walls of the arteries, allowing the blood vessels to become wider. This reduces the pressure in the arteries and allows blood to flow more easily through them. In turn, this increases the supply of blood to your lungs and improves your ability to do physical activities. Macitentan will be prescribed for you by a doctor who is a specialist.
Before taking macitentan
Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking macitentan it is important that your doctor knows:
Om du har några problem med hur din lever fungerar, eller om du har några problem med hur dina njurar fungerar.
If you have been told you have a reduced number of red blood cells (anaemia).
Om du är gravid, försöker bli gravid eller ammar.
If you have ever had an allergic reaction to a medicine, or if you are allergic to soya.
Om du tar några andra läkemedel. Detta inkluderar alla läkemedel du tar som finns att köpa utan recept, samt växtbaserade och komplementära läkemedel.
How to take macitentan tablets
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack, along with any information you have been given by your hospital. The manufacturer's leaflet will give you more information about macitentan and a full list of side-effects which you may experience from taking it.
Take macitentan exactly as your doctor tells you to. The usual dose is one 10 mg tablet daily. Try to take your doses at the same time of day each day, as this will help you to remember to take the tablets regularly.
Swallow the tablet whole with a drink of water. You can take macitentan either before or after food.
If you forget to take a dose at your usual time, take it as soon as you remember. If you do not remember until the following day, skip the forgotten dose. Do not take two doses at the same time to make up for a missed dose.
Få ut det mesta av din behandling
Try to keep your regular appointments with your doctor so your progress can be checked. Your doctor will want you to have some blood tests both before and during your treatment. The tests will check that your liver is staying healthy.
Treatment with macitentan is usually long-term. Continue to take the tablets unless you are advised otherwise.
If you buy any medicines 'over the counter', always check with a pharmacist that they are suitable for you to take. The herbal medicine called St John's wort can interfere with macitentan so you should not take preparations containing this ingredient.
If you are due to have an operation or some other medical treatment, it is important that you tell the person carrying out the treatment that you are on macitentan.
Women with pulmonary hypertension should avoid becoming pregnant as pregnancy can lead to serious worsening of your condition. Women of childbearing potential must use effective contraception during treatment with macitentan. Speak with your doctor about which contraceptive methods are suitable for you.
Can macitentan tablets cause problems?
Along 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 macitentan. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Very common macitentan side-effects (these affect more than 1 in 10 people) | Vad kan jag göra om jag upplever detta? |
Mouth, throat and chest infections | If troublesome, speak with your doctor for advice |
Huvudvärk | Drink plenty of water and ask your doctor or pharmacist to recommend a suitable painkiller. If the headaches continue, let your doctor know |
Feeling tired (due to anaemia) | If troublesome, speak with your doctor for advice. Do not drive and do not use tools or machines while affected |
Fluid retention and swelling of ankles or feet | Try raising your feet when sitting down and avoid wearing tight socks or stockings. If troublesome, speak with your doctor for advice |
Common macitentan side-effects (these affect fewer than 1 in 10 people) | Vad kan jag göra om jag upplever detta? |
Känner dig yr | This could be a symptom of your condition or a side-effect of using macitentan. If you begin to feel dizzy, sit or lie down for a few minutes so you do not faint, and then get up more slowly. Do not drive and do not use tools or machines while affected |
Flu-like symptoms, feeling hot or flushed and urine infections | If troublesome, speak with your doctor for advice |
Blocked nose (nasal congestion) | Try a steam inhalant such as menthol crystals or eucalyptus oil or ask a pharmacist for advice. Avoid taking decongestant medicines, such as pseudoephedrine, as these may affect your medical condition |
Viktigt: your doctor will discuss with you the possibility that your medicine could cause damage to your liver. If you experience any of the following you should let your doctor know straightaway so that it can be investigated:
Aptitlöshet
Extreme tiredness
Dark urine
Klåda
Yellowing of your skin or the whites of your eyes (jaundice)
Constantly feeling sick (nausea) or being sick (vomiting)
Pain in your tummy (abdomen)
These are signs that your liver could be being damaged and your doctor will want you to have a blood test to check for this.
If you experience any other symptoms which you think may be due to the tablets, please speak with your doctor or pharmacist for further advice.
How to store macitentan
Förvara 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
Viktig 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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Kontrollera möjliga interaktioner mellan läkemedel, kosttillskott och livsmedel innan du tar dem tillsammans.
Vanliga frågor
What is the specific type of blood pressure macitentan helps with?
Macitentan is used to treat pulmonary arterial hypertension (PAH), which is high blood pressure specifically in the arteries that carry blood from your heart to your lungs.
How does macitentan work to improve my condition?
Macitentan works by relaxing the muscles in the walls of your lung arteries. This causes the blood vessels to widen, which reduces the pressure in the arteries and allows blood to flow more easily to your lungs. This improved blood flow helps you perform physical activities more easily.
Who will prescribe macitentan for me?
Macitentan will be prescribed for you by a doctor who is a specialist in conditions like pulmonary hypertension.
Can I take macitentan if I am allergic to soya?
If you are allergic to soya, it is important to inform your doctor before you start taking macitentan. They will assess if the medicine is suitable for you.
Why is it important to tell my doctor if I take other medicines, including herbal ones?
It's important because some medicines are not suitable to be taken together, and others may require extra care. For example, the herbal medicine St John's wort can interfere with macitentan, so you should not take preparations containing it.
How should I manage pregnancy risk while on macitentan?
Women with pulmonary hypertension should avoid becoming pregnant as it can seriously worsen your condition. If you are of childbearing potential, you must use effective contraception throughout your treatment with macitentan. Discuss suitable contraceptive methods with your doctor.
Vad ska jag göra om jag känner mig yr när jag tar macitentan?
If you start to feel dizzy, sit or lie down for a few minutes to prevent fainting, then get up slowly. You should not drive or operate tools or machines if you are feeling dizzy. This symptom could be related to your condition or a side-effect of the medication.
Vidare läsning och referenser
- Manufacturer's PIL, Opsumit® 10 mg tablets; Janssen-Cilag Ltd, a Johnson & Johnson Company, The electronic Medicines Compendium. Dated January 2023.
- Mediciner Komplett BNF 89:e Utgåvan; Brittiska Läkarföreningen och Kungliga Farmaceutiska Sällskapet i Storbritannien, London.
Om författarenVisa fullständig biografi

Michael Stewart, MRPharmS
Ansvarig för granskning av medicinbroschyrer – Konsult, Apotekare
BPharm (Hons), MRPharmS
Michael är en apotekare som arbetar i Midlands och South Yorkshire med mer än 20 års erfarenhet av att ge råd om läkemedel och medicinska tillstånd. Han har en stark bakgrund inom vårdutbildning och har producerat och levererat utbildningskurser för apoteksteam och personal inom vårdboenden, inklusive sjuksköterskor. Han har också bidragit till apoteksrådgivande styrelser för hantering av mindre allvarliga tillstånd i samhället.
Om recensenten

Sid Dajani
Sultan Dajani tog examen vid London School of Pharmacy 1994 och blev den yngsta valda medlemmen i Royal Pharmaceutical Society-rådet sedan dess grundande 1842.
Artikelhistorik
Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
Artikeln finns också på Engelska, Tyska, Spanska, Franska, Italienska, Portugisiska, Hindi, Hebreiska, Arabiska, och Svenska.
Next review due: 23 Jun 2027
21 jun 2024 | Senaste versionen

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