Order Doxazosin to get your blood pressure under control

Doxazosin is prescribed for high blood pressure, but it’s also used for treating an enlarged prostate. The drug works by relaxing the blood vessels so that blood can circulate more easily.

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Strength Quantity Price Stock
1mg28 tablet£15.95In Stock
2mg28 tablets£15.95In Stock
4mg28 tablet£15.95In Stock
Prices exclude a prescription fee. This treatment requires a quick online consultation,
which a doctor will review to determine if a prescription is appropriate.

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What is Doxazosin?

Doxazosin is a medication which treats high blood pressure and an enlarged prostate gland. It's a type of medicine known as an alpha-blocker.

How does Doxazosin work?

Doxazosin works by relaxing the blood vessels so that blood can circulate easier, lowering the blood pressure to a healthy level. It also relaxes the muscle around the bladder and prostate gland to make it easier to urinate. 

How long will I take Doxazosin for?

Doxazosin is a long term treatment which you may have to take for the rest of your life.

Is long term use of Doxazosin safe?

Doxazosin is designed for long term use so it is perfectly safe to use in this manner. 

What causes high blood pressure?

There are several conditions and medications which are known to cause high blood pressure. These include: 

  • Kidney disease 

  • Kidney infections

  • Diabetes 

  • Obstructive sleep apnoea 

  • Glomerulonephritis 

  • Narrowed arteries supplying the kidneys 

  • Hormone problems 

  • Lupus 

  • Scleroderma 

  • The combined contraceptive pill 

  • Steroid medications 

  • Non-steroidal anti-inflammatory drugs 

  • Certain over-the-counter cold and cough remedies 

  • Herbal remedies containing liquorice 

  • Recreational drugs 

  • Selective serotonin noradrenaline reuptake inhibitors (antidepressants)  

What are the risks of high blood pressure?

High blood pressure puts a strain on your organs and blood vessels. This can increase your risk of experiencing: 

  • Heart disease 

  • Heart attacks 

  • Strokes

  • Heart failure 

  • Aortic aneurysms 

  • Vascular dementia 

  • Kidney disease 

  • Peripheral arterial disease


Active ingredients

The active ingredient in the medicine is Doxazosin.

Inactive ingredients

The other ingredients contained in Doxazosin are: Lactose monohydrate, magnesium sterate, microcrystalline cellulose, sodium lauryl sulphate, sodium starch glycolate (type A) and colloidal anhydrous silica.


How to take Doxazosin

Doxazosin should be taken once a day, either in the morning or at night. The tablets should be swallowed whole with a drink of water and can be taken before or after food. Always take Doxazosin exactly as your doctor has instructed. 

You will usually begin on a 1mg dose per day which may gradually increase to 2mg or 4mg per day. Always take the dose specified by your doctor. This can vary depending on the severity of your symptoms.

How long should I use Doxazosin for?

Doxazosin is designed for long term use. Your doctor will tell you how long you should take it for.

What should I do if I forget to take Doxazosin?

If you forget to take Doxazosin skip the missed dose and take your next one as scheduled. Do not take a double dose to make up for a missed one. 

What should I do if I take too much Doxazosin?

Seek medical assistance if you accidentally take too much Doxazosin.

Can I dissolve Doxazosin in water?

Doxazosin tablets should be swallowed whole with a drink of water. Do not split them unless they have a score mark in the middle of the tablets and it specifies in the instruction leaflet that this is safe to do. 

Side Effects

Common side effects may include: 

  • Dizziness 

  • Vertigo 

  • Headaches 

  • Low blood pressure 

  • Swelling in the feet, ankles or fingers 

  • Coughing 

  • Chest cold 

  • Respiratory tract infection 

  • Nasal inflammation causing sneezing, runny nose or stuffiness 

  • Abdominal pain 

  • Nausea 

  • Vomiting 

  • Feeling tired 

  • Weakness 

  • Indigestion 

  • Itching

  • Back pain 

  • Muscle pain 

  • Flu-like symptoms 


Uncommon side effects may include: 

  • Constipation 

  • Gastroenteritis 

  • Difficulty passing urine 

  • Gout 

  • Swelling in the face

  • Sleeplessness 

  • Agitation or nervousness 

  • Anxiety or depression 

  • Reduced feeling in the hands and feet 

  • Altered appetite 

  • Nose bleeds 

  • Skin rash

  • Ringing in the ears 

  • Erectile dysfunction 

  • Stroke


Rare side effects may include: 

  • Frequent urination 

  • Muscle cramps or weakness 

  • Low blood pressure leading to Fainting or Dizziness 

  • Hepatitis 

  • Hives 

  • Hair loss 

  • Wheezing 

  • Blurred vision 

  • Hot flushes 

  • Discomfort or breast enlargement in men


If you experience any of the following side effects after taking Doxazosin tell your doctor right away: 

  • Shortness of breath 

  • Altered heartbeat 

  • Heart palpitations 

  • Chest pain 

  • Jaundice 

  • Lowered number of white blood cells which can cause easy bruising or bleeding 

  • Painful erections

How to cope with Doxazosin side effects

If Doxazosin makes you feel dizzy, weak or sleepy sit or lie down until you feel better and avoid driving or using tools. Drinking alcohol is likely to make side effects worse. Take your medication at night if it is making you feel sleepy. Drink plenty of fluids, get enough rest and take a painkiller like Paracetamol if you are getting headaches. Elevate your legs while sitting down if your feet and ankles are swollen and avoid eating meals which are too rich or spicy if you feel sick. 


Do not take Doxazosin if: 

  • You are allergic to any other types of quinazolines or any of the ingredients contained in Doxazosin 

  • You are breastfeeding 

  • You have an enlarged prostate and low blood pressure 

  • You have a history of orthostatic hypotension 

  • You have an enlarged prostate alongside: a congestion or blockage in the urinary tract, a long term urinary tract infection or bladder stones 

  • You have overflow incontinence 

  • You have anuria 


Tell your doctor if any of the following apply to you before taking Doxazosin: 

  • Liver disease 

  • Heart disease

  • If you are pregnant 

  • If you are trying to get pregnant 

  • If you are taking other medications 

  • If you are scheduled to have an eye operation for Cataracts

Drug Interactions

The following medications may interfere with Doxazosin: 

  • Clarithromycin 

  • Itraconazole 

  • Ketoconazole 

  • Telithromycin 

  • Voriconazole 

  • HIV medications 

  • Nefazodone

Doxazosin and pregnancy

If you are pregnant, or planning to get pregnant, talk to your doctor before taking Doxazosin. 

Doxazosin and breastfeeding

You should talk to your doctor if you are breastfeeding so that they can establish the safety of taking Doxazosin. 

Doxazosin and alcohol

It's best to avoid drinking alcohol when you start taking Doxazosin. Alcohol can enhance the lowering of the blood pressure causing lightheadedness and dizziness. 

Can I take painkillers with Doxazosin?

You can take Paracetamol alongside Doxazosin but it's recommended to avoid Anti-inflammatories like ibuprofen as these might increase your blood pressure. 

Will Doxazosin affect my contraception?

Doxazosin will not have an effect on your contraception. It is not usually recommended for women with high blood pressure to take the combined pill however. 

Will Doxazosin affect my fertility?

Doxazosin will not have an affect on your fertility but if you are trying to get pregnant speak to a doctor to ensure the medication is suitable for you. 

Will Doxazosin affect my sex life?

Some rare side effects of Doxazosin include erectile dysfunction, painful erections or no semen during ejaulation. Talk to your doctor if this is an issue for you.

Can I drive while taking Doxazosin?

Doxazosin may cause dizziness when you first start to take it. Do not drive, ride a bike or operate machinery until you know how Doxazosin affects you. 

Is there any food or drink I need to avoid while taking Doxazosin?

Eating a healthy diet is recommended while taking Doxazosin in order to maintain a healthy blood pressure. 

Treatment Options

Alternatives to Doxazosin

There are four types of medications which treat high blood pressure: ACE inhibitors, Angiotensin-2 receptor blockers (ARBs), Calcium channel blockers and Beta-blockers. You'll usually be offered an Ace inhibitor or ARB in the first instance. If this is ineffective, or if you are of African or Caribbean origin or over the age of 55, then you will be prescribed a calcium channel blocker. 

Can Lifestyle changes help high blood pressure?

Everyone with high blood pressure is recommended to make lifestyle changes including: 

  • Reducing your consumption of salt to less than 6g a day 

  • Eat a healthy diet that is low in saturated fat and includes plenty of fruit and vegetables 

  • Get regular exercise 

  • Maintain a healthy weight 

  • Cut down on caffeine 

  • Quit smoking 

  • Get plenty of sleep

Can Lifestyle changes help an enlarged prostate?

There are lifestyle changes you can make to help reduce an enlarged prostate. These include: 

  • Cut down on fizzy drinks, artificial sweeteners, caffeine and alcohol 

  • Drink less in the evenings and avoid drinking fluids up to 2 hours before bed 

  • Empty your bladder regularly 

  • Consume more fruit and fibre

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