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Detailed medicine guidance

How and when to take bendroflumethiazide

NHS medicines information on dosage for bendroflumethiazide, how to take it and what to do if you miss a dose or take too much.

About this information

This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.

Dosage and how to take bendroflumethiazide

Always take bendroflumethiazide as a doctor or pharmacist has told you.

Dosage

Bendroflumethiazide comes as tablets.

Your dose of bendroflumethiazide will depend on why you're taking it, your age and how well your kidneys work.

The usual adult dose for high blood pressure is 2.5mg once a day.

For build-up of fluid (oedema), the usual dose is 5mg to 10mg once a day but this may be reduced to a single dose taken 1 to 3 times a week.

Occasionally, your doctor might prescribe bendroflumethiazide to be taken twice a day.

Your dose may be lower if you are over 65 or have kidney problems.

For babies and children, your child's doctor will use your child's weight or age to work out the right dose.

How to take it

You'll usually take bendroflumethiazide once a day, in the morning. If you take it later in the day you may have to wake up in the night to go to the toilet.

If you have to take it twice a day, take it once in the morning and again around midday.

Try to take bendroflumethiazide at the same time every day to help keep it working properly.

Sometimes, your doctor may advise you to take bendroflumethiazide less often. You may only need to take it 2 or 3 times a week, in which case take it on the same days each week.

You can take bendroflumethiazide with or without food.

Swallow the tablets whole with a drink of water. Speak to a pharmacist if you or your child finds it difficult to swallow tablets.

View the original NHS website page ↗. Refreshed 19 August 2026.

Licensed under the Open Government Licence v3.0 ↗. MyPHU is independent and is not endorsed by the NHS.

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