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Tamsulosin: uses, side effects & brands
Tamsulosin relaxes the prostate and bladder neck to ease urinary flow in BPH. It belongs to the Urology & men’s health group. These treat prostate enlargement, urinary symptoms and erectile dysfunction.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Urology & men’s health |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Urinary symptoms of an enlarged prostate (BPH)
- Weak urine flow and difficulty starting urination
- Helping kidney or ureter stones pass (some cases, doctor-advised)
Common brand names
- India: Urimax, Veltam, Contiflo
- Worldwide: Flomax
Common side effects
- Dizziness, especially on standing
- Reduced or absent semen on ejaculation
- Runny or blocked nose
- Headache
Before taking it — precautions
- Tell your eye surgeon before cataract surgery that you take or have taken tamsulosin
- Rise slowly to avoid dizziness, especially at the start
- Tell your doctor about low blood pressure, other blood-pressure medicines or severe liver disease
When to see a doctor urgently
- Fainting or severe dizziness
- Swelling of face or throat, or severe rash (urgent)
- A painful erection lasting several hours (urgent)
Frequently asked questions
Does tamsulosin shrink the prostate?
No. It relaxes the muscle of the prostate and bladder neck to ease flow, usually within days. Finasteride or dutasteride are the medicines that slowly shrink it.
Why does tamsulosin affect ejaculation?
It can reduce or stop semen coming out during ejaculation. This is harmless and goes away after stopping.
Why should I tell my eye doctor?
Tamsulosin can cause a floppy iris during cataract surgery. If the surgeon knows, they can plan for it.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.