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Alfuzosin for prostate gland enlargement


Your first dose of alfuzosin may make you feel dizzy or faint, or start sweating.

Take your first tablet at bedtime and remain lying down until these symptoms have completely passed.

Alfuzosin can cause dizziness which may affect your ability to drive. Make sure your reactions are normal before you drive and before you use tools or machines.

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About alfuzosin

Type of medicine

An alpha-blocker

Used for

Enlargement of the prostate gland in men

Also called

Tablets: Xatral®
Prolonged-release tablets: Xatral® XL; Besavar® XL; Fuzatal® XL; Vasran® XL; Zochek®;

Available as

Tablets and prolonged-release tablets

The prostate gland commonly becomes larger in older men. Prostate gland enlargement is also called benign prostatic hyperplasia (BPH). The prostate is situated close to the bladder, so its enlargement can cause problems with passing urine. Common symptoms that are experienced are having to wait before your urine starts to flow, taking longer at the toilet, dribbling urine, and a feeling that your bladder is not quite empty.

Alfuzosin works by relaxing the muscles around your bladder and prostate gland so that you can pass urine more easily. There are two types of alfuzosin tablets available - immediate-release tablets and prolonged-release tablets. Immediate-release tablets need to be taken several times a day (typically, three times daily). Prolonged-release tablets are taken once a day as they release alfuzosin slowly throughout the day.

Before taking alfuzosin

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 alfuzosin it is important that your doctor knows:

  • If you ever feel dizzy or faint when you stand up, or if you have ever fainted after passing urine.

  • If you need to have cataract eye surgery.

  • If you have any liver, kidney, or heart problems.

  • If you have ever had an allergic reaction to a medicine.

  • If you are taking or using any other medicines. This includes any medicines you are taking which are available to buy without a prescription, as well as herbal and complementary medicines.

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How to take alfuzosin

  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about alfuzosin and will provide you with a full list of the side-effects which you may experience from taking it.

  • Take alfuzosin exactly as your doctor tells you to. Swallow the tablet whole with a drink of water - do not break or chew the tablet.

  • Your first dose of alfuzosin may make you feel dizzy or faint, so it is important that you take it just before you go to bed. If you feel dizzy or weary, or if you start sweating, remain lying down until these symptoms have completely gone.

  • If you have been given immediate-release tablets (2.5 mg strength), the usual dose is one tablet three times each day, although this can vary. Your doctor will tell you what dose is right for you, and the directions will also be printed on the label of the pack of tablets to remind you about what the doctor said to you.

  • If you have been given prolonged-release tablets (these have 'XL' after the brand name), take one tablet every day. Take the tablet with a snack or just after eating a meal. After the first dose, you can take your dose at a time of day that best suits you, but try to take your doses at the same time of day each day. This will help you to remember to take the tablets regularly.

  • If you forget to take a dose, do not worry, just take the next dose when it is due and then carry on as before. Do not take two doses together to make up for a forgotten dose.

Getting the most from your treatment

  • Alfuzosin can cause dizziness particularly when you first start taking it. This may affect your ability to drive. Make sure your reactions are normal before you drive or do things which would be dangerous if you were not fully alert.

  • Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Your doctor may want to take your blood pressure from time to time, particularly when you first start the treatment.

  • You are advised not to drink alcohol while you are on alfuzosin. Alcohol increases the risk of side-effects from alfuzosin, such as feeling faint or dizzy.

  • Consider reducing or stopping the amount of caffeine you drink (commonly found in tea, coffee and cola). Caffeine can make your symptoms worse, so drinking less of these things may benefit you.

  • If you are a smoker, stopping smoking may significantly improve your symptoms. This is because nicotine irritates the bladder. You can ask your doctor for advice on quitting.

  • If you are having an operation or dental treatment, tell the person carrying out the treatment that you are taking alfuzosin. This is because your blood pressure may drop suddenly if you have an anaesthetic. If you are having cataract surgery, it is particularly important that you tell your surgeon you are on alfuzosin. This is because an eye problem known as 'floppy iris syndrome' has developed in some people and your doctor may advise you to stop taking alfuzosin for a short while.

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Can alfuzosin 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 alfuzosin. 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 alfuzosin side-effects (these affect fewer than 1 in 10 men)

What can I do if I experience this?

Feeling tired, dizzy, faint, or weak

Do not drive and do not use tools or machines while affected

Feeling light-headed when getting up from a lying or sitting position

Getting up more slowly may help. If you begin to feel dizzy, lie down so that you do not faint, then sit for a few moments to prevent the dizziness returning

Dry mouth

Try chewing sugar-free gum or sucking sugar-free sweets


Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. If the headaches continue, let your doctor know

Feeling sick (nausea), diarrhoea, tummy (abdominal) pain

Stick to simple foods. Drink plenty of water to replace any lost fluids

If you experience any other symptoms which you think may be due to the tablets, speak with your doctor or pharmacist for further advice.

How to store alfuzosin

  • Keep all medicines out of the reach and sight of children.

  • Store in a cool, dry place, away from direct heat and light.

Important information about all medicines

Important information about all medicines

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. Take the container with you, even if it is empty.

If you buy any medicines, always check with a pharmacist that they are safe to take alongside your prescribed medicines.

This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.

Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.

If you have any questions about this medicine ask your pharmacist.

Report side effects to a medicine or vaccine

If you experience side effects, you can report them online through the Yellow Card website.

Further reading and references

Article history

The information on this page is written and peer reviewed by qualified clinicians.

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