Ethambutol for tuberculosis
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSLast updated 7 Jun 2025
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Ethambutol is one of several medicines you will need to take to treat tuberculosis (TB).
It is important that you take your doses regularly.
If you develop any problems with your eyesight, you must let your doctor know about this straightaway.
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About ethambutol for tuberculosis
Typ av medicin | An antituberculosis medicine |
Används för | Tuberculosis (TB) |
Även kallad | Ethambutol hydrochloride |
Tillgänglig som | Tabletter |
Ethambutol is used to treat tuberculosis (TB). TB is a bacterial infection which is mostly found in the lungs but which can affect any part of your body. TB is treatable with a course of medicines which need to be taken for six months. You will need to take several medicines to treat TB - ethambutol is one of the medicines prescribed during the first two months of the treatment.
Ethambutol will be prescribed for you by a doctor who specialises in the treatment of TB. It is important that you take it regularly.
Before taking ethambutol
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 ethambutol, it is important that your doctor knows:
If you are pregnant or breastfeeding. (Although ethambutol is not known to be harmful to babies, it is still important that you tell your doctor if you are expecting or breastfeeding a baby.)
If you have any problems with your eyesight.
Om du har några problem med hur dina njurar fungerar.
Om du tar några andra läkemedel. Detta inkluderar alla läkemedel som kan köpas utan recept, samt växtbaserade och komplementära läkemedel.
Om du någonsin har haft en allergisk reaktion mot en medicin.
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How to take ethambutol
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 ethambutol and will provide you with a full list of the side-effects which you could experience from taking it.
Ethambutol will be prescribed for you in one of two ways - you will either be asked to take one dose every day, or, one dose three times a week. Your doctor will tell you which way is right for you. If you are asked to take one dose three times a week, you will be supervised while you take the doses. This is called directly observed therapy (DOT).
If you are taking ethambutol every day, try to take your doses at the same time of day each day, as this will help you to remember to take ethambutol regularly. Your doctor will tell you how many tablets to take for each dose, as this will be individually tailored to suit you and depends upon your weight. It is important that you take ethambutol exactly as you are told. You can take the tablets either with or without food. If you forget to take a dose at your usual time, take it as soon as you remember, but do not take two doses on the same day to make up for a missed dose.
Få ut det mesta av din behandling
Tillbaka till innehållIt is important that you keep your regular clinic appointments with your doctor. This is so your doctor can check on your progress. Your doctor may want you to have blood tests from time to time during the treatment to make sure you have just the right amount of the medicine in your bloodstream.
Continue to take the tablets regularly - do not stop taking ethambutol unless your doctor tells you to stop. This is because it is important for you to complete the course of medicine so that the infection does not come back. Your treatment with ethambutol will last for two months (unless you develop troublesome side-effects).
Ethambutol can stop the oral typhoid vaccine from working properly. If you are due to have any vaccinations, make sure that the person treating you knows you are taking this medicine. Also, if you are due to have an operation or any dental treatment, you should tell the person carrying out the treatment that you are taking medicines for TB.
If you buy any medicines 'over the counter', check with a pharmacist that they are suitable for you to take alongside your prescribed medicines. Antacid remedies for indigestion which contain aluminium hydroxide are not suitable while you are taking ethambutol.
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Can ethambutol 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 the most common ones associated with ethambutol. You will find a full list of side-effects in the manufacturer's information leaflet supplied with the medicine. 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.
Ethambutol side-effects | Vad kan jag göra om jag upplever detta? |
Eyesight problems such as colour blindness, blurred vision, poor vision, some loss of vision | Contact your doctor omedelbart. Your doctor will want to review your treatment, as you will need to stop taking ethambutol |
How to store ethambutol
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
Never take more than the prescribed dose. If you suspect that you or someone else might have taken an overdose of this medicine go to the accident and emergency department of your local hospital at once. Take the container with you, even if it is empty.
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.
Rapportera biverkningar av ett läkemedel eller vaccin
Om du upplever biverkningar kan du rapportera dem online via Yellow Card website.

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Kontrollera möjliga interaktioner mellan läkemedel, kosttillskott och livsmedel innan du tar dem tillsammans.
Vidare läsning och referenser
- Manufacturer's PIL, Ethambutol 400 mg Tablets; Esteve Pharmaceuticals (formerly Intrapharm Laboratories), The electronic Medicines Compendium. Dated June 2024.
- Mediciner Komplett BNF 89:e Utgåvan; Brittiska Läkarföreningen och Kungliga Farmaceutiska Sällskapet i Storbritannien, London.
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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.
Next review due: 7 Jun 2028
7 Jun 2025 | Senaste versionen

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