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Doxazosin mesilate

Enlarged prostate, also known as benign prostatic hyperplasia, is a condition which causes difficulty passing water. It is more common among men aged 50 and over.

  1. Nearly a third of men over 70 affected
  2. Caused by hormonal conversion
  3. Treatable with long-term medication

We do not provide medications for enlarged prostate through our online pharmacy service. If you think you may have BPH, we recommend you see your GP in person to discuss your symptoms further.

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PLEASE NOTE: This treatment is not available through our online pharmacy service. This page is for information only. If you are experiencing any of the symptoms related to the condition(s) this medication treats, we strongly recommend that you see your GP in person.

This content was reviewed by a clinician on

23 June 2021
dr daniel

Dr Daniel Atkinson

(GP Clinical Lead - GMC No. 4624794) 23 June 2021
Product information

What is Doxazosin?

Doxazosin belongs to a group of medications called vasodilators. These drugs are prescribed to treat hypertension (high blood pressure) and symptoms of an enlarged prostate, and reduce tension in the prostate and urinary tract.

How does Doxazosin work?

Doxazosin works by blocking alpha receptors that are found in blood vessels of the muscle wall. This allows the blood vessels to relax, improving blood flow and lowering blood pressure. These receptors are also found in the muscle of the prostate gland, helping it to relax, and they reduce the pressure it puts on the bladder.

Doxazosin and Hypertension

Hypertension is a condition that rarely presents with any symptoms, and therefore may go undiagnosed for long periods of time. It’s a common condition in the UK, with around one third of adults believed to have it. While the condition itself does not present health risks, it may be a precursor to serious events and illnesses in the future, such as heart attacks and kidney disease. It can be identified via a blood pressure test, which can be conducted by a clinician at a GP surgery. Some pharmacies and workplaces may offer the test free of charge. 

Causes of high blood pressure are hard to diagnose in individuals, but genetic factors (having a family member with it or an African or Caribbean ethnic background) and lifestyle factors (obesity, smoking and high alcohol consumption) may all contribute to its development. Treatment consists of a combination of medications (such as Doxazosin) and lifestyle changes (getting plenty of exercise and eating a healthy diet). 

Doxazosin and Benign prostate enlargement

Benign prostate enlargement (BPE) is a common condition in men over the age of 50. Although it  may cause some distress, it is not a health risk. Symptoms include difficulty urinating, an inability to empty the bladder and a frequent need to urinate. It’s not clear why this happens, but it’s likely linked to hormonal changes that occur when we get older, which result in prostate enlargement and the prostate  pressing on the bladder. 

Diagnosis includes a urine test, but a definitive verdict to ensure that something more serious isn’t causing the symptoms may need to be made following an assessment at your nearest hospital. Treatment may not be necessary if your symptoms are mild and can be managed by making changes such as avoiding alcohol, fizzy drinks and caffeine. In more severe cases, you may be prescribed a treatment that reduces the size of the prostate or helps to manage  symptoms (such as Doxazosin). Surgery may be required in extreme cases.

Can I buy Doxazosin online? 

In order to receive Doxazosin treatment you will need to have a consultation with a qualified clinician. You can book an appointment with our doctors and prescribing clinicians Monday to Friday, 9.30am - 4.30pm. 

During your appointment our doctors can provide advice, make a referral to a specialist, write fit notes and prescribe medication. Should the doctor wish to prescribe Doxazosin tablets for you, you can opt to buy them from our UK-based pharmacy. All orders are shipped by next-day courier and in discreet packaging.

Page last reviewed:  23/06/2021

Please refer to the leaflet and the instructions given by your prescriber when taking this treatment.

Page last reviewed:  23/06/2021
Please read the patient information leaflet for this medicine fully before use:

Doxazosin 1mg 1mg

Side effects

Report any side effects you get to your doctor or pharmacist. Go to hospital if you get any side effects that become serious. If you begin taking any other medications, it's important to let your prescriber know. When being issued this treatment, it's also important to let your prescriber know about any treatments you're using currently.

Page last reviewed:  23/06/2021
Please read the patient information leaflet for this medicine fully before use:

Doxazosin 1mg 1mg


How should it be stored?

Doxazosin should be kept out of the reach of children.

Can I use this medication while pregnant or breastfeeding?

This treatment is not recommended if you are pregnant or breastfeeding. You should speak to a clinician about alternative treatment options.

Will it affect my ability to drive?

Dizziness may occur at the beginning of treatment with Doxazosin. If you experience dizziness, you should avoid driving until the dizziness subsides. 

Can I buy it over the counter? 

No. Doxazosin is a prescription-only treatment.  

How can I buy Doxazosin online?

You can discuss your suitability for treatment with Doxazosin with one of our GPhC-registered clinicians via our online video consultation service. In order for our clinicians to provide you with a prescription for this treatment however, you must have been prescribed it previously. 

Our clinicians can offer advice, referral to specialists, fit notes and prescriptions for treatment, where suitable. They are available for consultation between 9.30am and 4.30pm, Monday to Friday. 

Page last reviewed:  23/06/2021
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