Bendroflumetiazidtabletter
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSSenast uppdaterad 11 mars 2025
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Bendroflumethiazide is a 'water tablet' (a diuretic).
It is best taken in the morning.
Any side-effects are usually mild, but may include feeling sick (nausea) or dizzy.
Överblick
Bendroflumethiazide is a tablet medicine called a thiazide diuretic or 'water tablet'.
It is used to treat high blood pressure and fluid retention (oedema).
Take it exactly as your doctor tells you, usually in the morning.
Your doctor may do blood tests to check salt levels in your blood.
Common side-effects include feeling sick or dizzy when standing up.
Tell your doctor if you feel constantly thirsty, have a dry mouth, or dry skin.
About bendroflumethiazide
Typ av medicin | A thiazide diuretic |
Används för | High blood pressure; fluid retention |
Tillgänglig som | Tabletter |
Bendroflumethiazide belongs to a group of medicines called thiazide diuretics. A diuretic is a medicine which increases the amount of urine that you pass out from your kidneys. They are sometimes referred to as 'water tablets'. Diuretics are a common treatment for högt blodtryck (hypertension). They are also used to clear fluid from the body in conditions where your body retains too much fluid. This is called oedema.
Diuretics like bendroflumethiazide work by interfering with the transport of salt and water across certain cells in your kidneys. The effect of this is to make your kidneys pass out more urine.
Bendroflumethiazide can be given alongside other medicines used to treat fluid retention and/or hypertension. When it is used like this, you may be prescribed a combination tablet. Combination tablets help to reduce the total number of tablets you need to take each day.
Before taking bendroflumethiazide
Some 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 bendroflumethiazide it is important that your doctor knows:
Om du är gravid eller ammar.
If you have any problems with the way your liver works, or any problems with the way your kidneys work.
If you have gout, diabetes or an inflammatory condition called systemic lupus erythematosus (also called lupus, or SLE). These conditions can be made worse by medicines like bendroflumethiazide.
If you have been told by a doctor that you have low sodium or potassium levels in your blood, or high calcium levels in your blood.
If you have a problem with your adrenal glands, called Addisons sjukdom.
Om du har en sällsynt ärftlig blodsjukdom som kallas porfyri.
Om du tar eller använder några andra läkemedel. Detta inkluderar alla läkemedel du tar som finns att köpa utan recept, samt växtbaserade och komplementära läkemedel.
Om du någonsin har haft en allergisk reaktion mot en medicin.
How to take bendroflumethiazide
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about bendroflumethiazide and will provide you with a full list of the side-effects which you may experience from taking it.
Take the tablets exactly as your doctor tells you to. The usual dose for high blood pressure is 2.5 mg daily (one tablet). The initial dose for fluid retention is 5-10 mg once each day or once every other day, although this may be reduced to one dose on only two or three days of the week as you go on.
Your doctor is likely to recommend that you take bendroflumethiazide in the morning. This is so it works during the day and your sleep is not disturbed by you needing to get up to go to the toilet during the night.
Swallow the tablet with a drink of water. You can take it either with or without food.
If you forget to take a dose, take it as soon as you remember. However, if it is late afternoon when you remember, leave out the forgotten dose and take your next dose as usual on the following day. Do not take two doses on the same day to make up for a missed dose.
Få ut det mesta av din behandling
'Water tablets' (diuretics) like bendroflumethiazide help you to lose water. Occasionally you may lose too much and become lacking in fluid in the body (dehydrated). Let your doctor know if you feel constantly thirsty, your mouth is dry, or your skin looks and feels dry.
Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. The salt balance in your bloodstream may be upset by bendroflumethiazide and your doctor may want you to have a blood test from time to time to check for this.
If you have been prescribed bendroflumethiazide for high blood pressure (hypertension), your treatment is likely to be long-term. Although many people with high blood pressure do not feel unwell, if left untreated, high blood pressure can harm your heart and damage your blood vessels. This damage may later result in a heart attack, stroke, or kidney problems, so it is important that you continue to take the tablets regularly to help reduce the risk of this. You may also be given some lifestyle and dietary advice by your doctor, such as stopping smoking, reducing the amount of salt in your diet, eating more fruit and vegetables and less saturated fat, and taking some regular exercise. Following this advice will also help to reduce the risk of damage to your heart and blood vessels.
Ask your doctor for advice before drinking alcohol while you are on bendroflumethiazide. Alcohol will add to the blood pressure-lowering effect of bendroflumethiazide which will increase the possibility of you experiencing side-effects such as dizziness.
If you buy any medicines, check with a pharmacist that they are suitable to take alongside bendroflumethiazide.
If you are due to have an operation or any dental treatment, tell the person carrying out the treatment which medicines you are taking.
Can bendroflumethiazide 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 bendroflumethiazide. 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.
Common bendroflumethiazide side-effects | Vad kan jag göra om jag upplever detta? |
Feeling sick (nausea), stomach upset | This is usually mild, but it may help to take the medicine after food if you are not already doing so |
Feeling dizzy, particularly when you stand up (due to low blood pressure) | Getting up more slowly should help. Do not drive and do not use tools or machines while affected |
Om du upplever några andra symtom som du tror kan bero på tabletterna, tala med din läkare eller apotekare för vidare råd.
How to store bendroflumethiazide
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Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå omedelbart 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.
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Vanliga frågor
What is bendroflumethiazide 2.5 mg tablets used for?
Bendroflumethiazide 2.5 mg tablets are typically prescribed for high blood pressure, where the usual daily dose is 2.5 mg. While it can also be used for fluid retention, the initial dose for that condition is usually higher, between 5-10 mg once a day or every other day.
Who should not take bendroflumethiazide?
Bendroflumethiazide may not be suitable for everyone. It's important to inform your doctor if you are pregnant or breastfeeding, have liver or kidney problems, or suffer from gout, diabetes, or systemic lupus erythematosus (lupus/SLE), as these conditions can be worsened by this medication. You should also tell your doctor if you have previously been diagnosed with low sodium or potassium, high calcium levels, Addison's disease, or a rare blood disorder called porphyria.
Can I take bendroflumethiazide at night?
Your doctor is likely to recommend taking bendroflumethiazide in the morning. This timing helps the medicine work during the day, preventing your sleep from being disturbed by needing to get up frequently to use the toilet during the night.
What happens if I forget to take a dose of bendroflumethiazide?
If you forget to take a dose, you should take it as soon as you remember. However, if it's already late afternoon when you remember, it's best to skip the forgotten dose and take your next dose as usual the following day. Never take two doses on the same day to make up for a missed dose.
Is bendroflumethiazide a thiazide-like diuretic?
No, bendroflumethiazide is a thiazide diuretic, not a thiazide-like diuretic. It belongs specifically to the group of medicines known as thiazide diuretics.
Vidare läsning och referenser
- Manufacturer's PIL, Bendroflumethiazide Tablets 2.5 mg and 5 mg; Sigma Pharmaceuticals PLC (Special Concept Development / RxFarma), The electronic Medicines Compendium. Dated January 2021.
- 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.
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Nästa granskning förfaller: 10 mars 2028
11 mars 2025 | Senaste versionen

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