Tamsunax, a brand name for a formulation containing essential Tamsulosin, is widely used for various health benefits. This guide provides comprehensive information on the uses, dosage, side effects, and mechanism of action of Tamsunax, as well as insights into how long it takes to work. Understanding these aspects can help you make informed decisions about its use and effectiveness.

Tamsunax: Introduction

Tamsunax is an alpha-1-adrenoceptor antagonist medication which is used to effectively treat symptoms of an enlarged prostate in men. This condition is known as benign prostatic hyperplasia (BPH). It is available as a hydrochloride salt known as tamsulosin hydrochloride.

Uses for Tamsunax

Tamsunax is mainly used to treat symptoms of benign prostatic hyperplasia (BPH) in men such as difficulty in starting to urinate, interrupted flow of urine, and frequent urination of small amounts of urine. It works by relaxing the muscles of the prostate and bladder, thus allowing for easier urination.

Mechanism of Action

Tamsunax works by blocking the alpha-1 receptors which are responsible for the narrowing of the prostatic urethra, allowing for improved urine flow. It also helps the muscles of the prostate and bladder to relax, leading to decreased urinary frequency and improved overall urine flow.

How Long Does it Take to Work?

Tamsunax takes about 2-6 weeks to produce improvement in urinary symptoms. It may take up to four months for full beneficial effects to be seen.


Tamsunax is rapidly and extensively absorbed with an oral bioavailability of approximately 30%. Peak plasma concentrations are achieved within 1.5-2 hours of administration.

Route of Elimination

Tamsunax is primarily eliminated through metabolism via the cytochrome P450 (CYP) enzymes, primarily CYP3A4, and it is excreted in urine (75%) and feces (25%).

Dosage and Administration

Tamsunax should be taken orally with or without food once a day at the same time as prescribed by your physician. The recommended dosage for treating benign prostatic hyperplasia (BPH) is one 0.4mg capsule once daily. Dosage should be titrated based on clinical response. Tamsunax should not be taken with food containing high fat concentrate.

Side Effects

The most common side effects of tamsulosin include dizziness, headache, fatigue, nausea, and abdominal pain. Other potential side effects include erectile dysfunction, decreased libido, depression, decreased ejaculation, and swelling of the face, lips, tongue, or throat.


The toxic dose of tamsulosin has yet to be established. High doses of tamsulosin have been observed to cause significant side effects, including cardiovascular collapse and coma.


Tamsunax should be used with caution in patients with a history of hypotension, as there is an increased risk of hypotension. Patients with narrow-angle glaucoma, urinary retention, and hepatic impairment should also use caution when using tamsulosin.


Tamsunax may interact with other medications such as alprazolam, acetaminophen, and cimetidine. It is also important to tell your healthcare provider about any vitamins, herbal supplements, and over-the-counter medications you are taking.

Disease Interaction

Tamsunax has been known to interact with a variety of conditions, including hypertension, kidney disease, and liver disease. Patients with such conditions should give their healthcare provider full information about their diagnosis before taking tamsulosin.

Drug Interaction

Tamsunax can interact with a variety of medications, including antifungals, beta blockers, calcium channel blockers, and certain antibiotics. Patients should inform their healthcare provider of any medications they are taking before starting tamsulosin.

Food Interactions

Grapefruit juice can interact with tamsulosin and increase the risk of side effects. Patients should avoid eating grapefruit and drinking grapefruit juice while taking tamsulosin.

Pregnancy and Lactation Use

Tamsunax should be used with caution during pregnancy and should only be used when the potential benefits outweigh the risks. It is not recommended for use during lactation due to insufficient data.

Acute Overdose

An acute overdose of tamsulosin can lead to serious side effects such as hypotension, impaired consciousness, and bradycardia. Patients should seek medical attention immediately if they suspect an overdose.


Tamsunax is contraindicated in patients with allergy to tamsulosin or any other ingredient in the formulation. It is also contraindicated in patients with moderate or severe renal impairment.

Use Directions

Tamsunax should be taken orally with or without food once a day at the same time as prescribed by your physician. The dose should be adjusted based on clinical response. It is important to swallow the tablet whole with a glass of water.

Storage Conditions

Tamsunax should be stored at room temperature and away from direct light and moisture. It should be kept away from children and pets.

Volume of Distribution (Vd)

The volume of distribution for tamsulosin is approximately 40-55L/kg.


The half-life of tamsulosin is approximately 8-9 hours.


The clearance of tamsulosin is approximately 17 mL/min/kg.

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