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Quick summary

Type of medicine

Film-coated, prolonged-release tablet



Active Ingredient

Tamsulosin hydrochloride

Effective within

Prolonged-release (few days to few weeks)

Works by

Relaxing muscles in the prostate and urethra to improve urine flow

Side effects

Dizziness, abnormal ejaculation, weakness, headache, runny or blocked nose

Medication details


Flomaxtra contiene el principio activo clorhidrato de tamsulosina. La tamsulosina actúa bloqueando los receptores alfa que se encuentran en el músculo de la glándula prostática. La próstata, que se encuentra solo en los hombres, se encuentra en la parte superior del tubo que conecta la vejiga con el exterior (uretra). La glándula prostática a menudo se agranda con el avance de la edad, presionando la uretra y obstruyendo el flujo de orina desde la vejiga.

La tamsulosina hace que el músculo de la próstata se relaje. Esto alivia la presión sobre la uretra y permite que la orina fluya libremente a través de la glándula prostática. Esto hace que sea más fácil orinar y vaciar la vejiga.


Always adhere to your healthcare provider's instructions when taking Flomaxtra XL. The recommended dosage is one tablet daily, which can be taken with or without food. Swallow the tablet whole; avoid chewing or crushing it. If you miss a dose, take it as soon as you remember or continue with the next scheduled dose. Never double the dose to compensate for a missed one.


Each Flomaxtra XL 400 microgram tablet contains tamsulosin hydrochloride (equivalent to 367 micrograms of tamsulosin) as the active ingredient. Additional components include macrogol, magnesium stearate, butylhydroxytoluene, hypromellose, and yellow iron oxide E172.

Side Effects

As with any medication, Flomaxtra XL may cause side effects, although not everyone experiences them. Common side effects include dizziness, abnormal ejaculation (where semen enters the bladder instead of exiting through the urethra), weakness, headache, and runny or blocked nose. Uncommon side effects encompass palpitations, gastro-intestinal symptoms, and hypersensitivity reactions. If you experience any of these effects or other unusual symptoms, consult your healthcare provider.


Prior to using Flomaxtra XL, consult your doctor if you have kidney problems or are scheduled for eye surgery. Inform your healthcare provider of all medications you are currently taking, as Flomaxtra XL can interact with certain drugs. This medication is not intended for use in women or individuals under 18 years of age. Exercise caution while driving or operating machinery, as Flomaxtra XL may cause drowsiness, blurred vision, dizziness, and fainting.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on 24 ago 2023, 15:30

How it works

Start a consultation for your condition, select a treatment option, and our in-house clinicians will review and prescribe if suitable. Expect your order within 1-3 working days.

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Please read our FAQs page to find out more.

Can Flomaxtra XL affect my ability to drive or operate machinery?

Flomaxtra XL may cause drowsiness, blurred vision, dizziness, and fainting. Exercise caution when driving or operating machinery, especially if you experience these side effects.

Can Flomaxtra XL be taken with food?

Yes, Flomaxtra XL can be taken with or without food.

Can I drink alcohol while taking Flomaxtra XL?

It is recommended to avoid alcohol while taking Flomaxtra XL, as it may increase the risk of side effects such as dizziness and fainting.

Can I adjust the dosage of Flomaxtra XL on my own?

No, always follow your healthcare provider's prescribed dosage. Do not adjust the dosage without consulting your doctor.

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