The Independent Pharmacy

What Is Tamsulosin And What Is It Used For

Scott McDougall
Scott McDougallMPharmDirector & Registered Manager

Reviewed on 30 Oct 2023

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Tamsulosin is a commonly prescribed medication. People often use it for treating symptoms of benign prostatic hyperplasia (BPH), which is the enlargement of the prostate gland. It works by relaxing muscles in the prostate and bladder neck to improve urine flow and reduce BPH symptoms. Tamsulosin provides fast relief of urinary problems caused by BPH. So, that’s why it’s an effective option for many men seeking treatment.

Tamsulosin at a Glance

  • It significantly improves urine flow rates and BPH symptoms in men with enlarged prostates.
  • Tamsulosin provides fast symptom relief, with noticeable improvements often within a week.
  • It is generally well tolerated, with dizziness being the most common side effect.
  • Tamsulosin is often recommended long-term for sustained BPH symptom relief.

What Is Tamsulosin Used for?

Tamsulosin is most commonly used to treat bothersome urinary symptoms. These are often caused by an enlarged prostate, a condition known medically as benign prostatic hyperplasia (BPH). As men age, the prostate gland tends to grow larger and might put pressure on the urethra (that’s a tube that carries urine out of your body). This can make urination difficult and painful, which can be distressing, impacting daily life and comfort.

Tamsulosin works by relaxing the muscles around the prostate (a gland below the bladder in men) and bladder neck (the area where the bladder connects to the urethra, the tube that carries urine out of the body). This allows urine to flow more freely and easily. Tamsulosin provides rapid urinary tract symptom relief for:

  • A weak or slow urinary stream
  • Frequent need to urinate, especially at night
  • Sudden urge to urinate
  • Difficulty emptying the bladder (also known as urinary retention)
  • Hesitancy when starting to urinate

We recognise the challenges many face with these symptoms. Thankfully, for many men, tamsulosin offers much-needed relief from the frustrating urinary symptoms that disrupt sleep and daily routines. While not curative, it is an effective treatment option for managing BPH. Tamsulosin brings welcome symptom control for the millions of men who feel the impact of bothersome urination issues.

By improving urine flow, tamsulosin can reduce the bothersome symptoms of BPH that disrupt sleep and daily activities. It also decreases the risk of other problems like urinary tract infections.

Specifically, tamsulosin targets and blocks alpha-1 receptors (specific proteins in our body that can tighten muscles). By blocking these receptors, it prevents the muscles from tightening. This action helps open up a “valve-like” area, allowing urine to flow out faster. It also reduces the amount of urine left in the bladder after voiding.

Addressing the root of health concerns is vital. While tamsulosin primarily manages the symptoms of BPH, it doesn’t address the underlying cause of an enlarged prostate. However, it does offer a way to alleviate some of the discomforts associated with the condition. But it is an effective way to get fast relief of irritating urinary issues. Tamsulosin offers a convenient once-daily pill to help men void their bladders more easily and get back to their regular routines.

Other Uses and Benefits

While BPH is the main approved use, smaller studies suggest tamsulosin may also benefit:

The muscle-relaxing properties of tamsulosin seem promising for several urinary/prostate problems beyond BPH. More research into these additional applications is still needed.

Why Do Men Use Tamsulosin?

With urinary symptoms being one of the most bothersome aspects of BPH, having access to effective medications like tamsulosin is crucial. Tamsulosin is a first-line treatment option for two key reasons:

  1. Proven effectiveness - Many studies over the past years prove tamsulosin’s ability to improve urine flow and reduce associated symptoms. In placebo-controlled trials, men taking tamsulosin had significantly greater symptom relief compared to placebo.
  2. Well-tolerated - Most men do not experience significant side effects from tamsulosin. The most common side effect is dizziness which is generally mild. But overall, tamsulosin is well-tolerated and safe when taken as directed. This makes it an appealing option.

Additional reasons tamsulosin is widely used include:

  • Convenient once-daily dosing
  • Non-invasive compared to surgery
  • Rapid onset of symptom relief
  • Sustained efficacy over months/years of treatment
  • Lower cost than some other BPH drugs

With its favourable balance of effectiveness, safety, and convenience, tamsulosin has become a trusted first-line treatment for debilitating urinary symptoms of BPH. While not a cure, it provides critical relief that improves quality of life.

How Tamsulosin Works

Tamsulosin works by relaxing the muscles around the prostate and bladder neck to improve urine flow.

Specifically, it blocks receptors that cause these muscles to tighten up. This prevents the constriction that obstructs urine flow.

Think of it like taking your foot off the brake in a car - the car rolls easier because it’s no longer being braked. Tamsulosin takes the “brakes” off the bladder and prostate muscles so urine can flow more freely.

The enlarged prostate puts pressure on the urethra like stepping on a garden hose. This causes symptoms like a weak stream and frequent/urgent urination.

Tamsulosin relieves the pressure by opening up the urethra so urine can pass through easier and the bladder can empty more fully.

While the medical details are complex, the main idea is simple - tamsulosin relaxes muscles to improve flow. This provides rapid relief of BPH symptoms.

Potential Side Effects and Safety

Tamsulosin is generally well tolerated, with only a few potential side effects. The most common side effect is dizziness. Other possible adverse effects include:

  • Headaches
  • Runny or stuffy nose
  • Sleepiness
  • Back pain
  • Diarrhea
  • Decreased blood pressure upon standing

Experiencing side effects can be concerning. Thankfully, most side effects of tamsulosin are mild and often subside after a few weeks, allowing for a return to normalcy and comfort. More serious side effects are rare if taken as prescribed.

If you experience a severe allergic reaction or a severe skin reaction (such as skin pain or skin rash with blisters), get medical attention immediately.

It is important to take tamsulosin with caution and consult a doctor if experiencing any concerning symptoms like chest pain. But overall, tamsulosin has a proven track record of safety when patients follow their physician’s directions.

Practical Considerations

If prescribed tamsulosin, there are some important factors to discuss with your doctor:

  • Dosage - The recommended dosage is 0.4mg taken once daily. Take this medication by mouth about 30 minutes after eating. The capsule should be swallowed whole with water.
  • When it’s prescribed - You might get a Tamsulosin prescription when lifestyle changes and other treatments don’t relieve BPH symptoms. It’s also used before considering surgery.
  • Take as directed - It’s important to take tamsulosin exactly as prescribed. Skipping doses can reduce effectiveness. Let your doctor know about any missed doses.
  • Safety precautions - Advise your doctor of any medical conditions, medications, or planned eye surgery, as precautions may be needed in certain cases. Also avoid driving or hazardous activities until any dizziness subsides.

Having an open conversation with your doctor will help ensure you use tamsulosin safely and effectively based on your individual health profile.

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Tamsulosin FAQs

Why would someone take tamsulosin?

Tamsulosin is primarily taken for treating symptoms of benign prostatic hyperplasia (BPH), which is an enlarged prostate. It helps relax the muscles around the prostate to improve urine flow and urinary symptoms that can result from BPH.

What is the major side effect of tamsulosin?

The most common side effect of tamsulosin is dizziness, which occurs in around 10% of men taking it. The dizziness is usually mild and often goes away after the first week or two of treatment.

What symptoms does tamsulosin treat?

Tamsulosin improves urinary symptoms associated with BPH. These include reduced urine stream, difficulty urinating, sudden urge to urinate, and needing to get up frequently at night to urinate. It addresses symptoms related to constriction of the urethra.

How long should a man take tamsulosin?

Most men take tamsulosin long-term for sustained relief of BPH symptoms. Treatment often lasts for months or years. It is important to keep taking tamsulosin regularly as directed by your doctor, even if symptoms improve.


Benign prostate enlargement - NHS (

The management of lower urinary tract symptoms in men | The BMJ

924616 LEAFLET TAMSULOSIN 0.4MG CAP BL GB (Folder 103857610) (

Tamsulosin: 3-Year Long-Term Efficacy and Safety in Patients with Lower Urinary Tract Symptoms Suggestive of Benign Prostatic Obstruction: Analysis of a European, Multinational, Multicenter, Open-Label Study | European Urology | Karger Publishers

Side effects of tamsulosin - NHS (

A 6-month large-scale study into the safety of tamsulosin - PMC (

How and when to take tamsulosin - NHS (

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