Tamsulosin
Tamsulosin relaxes smooth muscle around the prostate and bladder outlet to ease symptoms from benign prostatic hyperplasia. It does not shrink the prostate or exclude cancer and infection.
Key points
- Tamsulosin may improve urine flow but can cause dizziness or fainting, especially after starting or restarting.
- Eye surgeons need to know about current or previous use before cataract or glaucoma surgery.
- Inability to urinate, severe lower-abdominal pain or a painful erection that does not subside needs urgent care.
Select a listed product and pack to order online. Supply depends on stock and destination rules; ask your doctor or pharmacist whether it suits you.
How it works
Tamsulosin blocks alpha-1A receptors in prostate and bladder-neck smooth muscle, reducing resistance to urinary flow.
Important safety checks
Low blood pressure, fainting history, severe liver or kidney disease, erectile-dysfunction medicines and other alpha blockers require review. Stand up carefully until individual effects are known. Urinary symptoms and PSA or prostate assessment may still need follow-up.
When to seek urgent care
Seek urgent help for inability to urinate with severe lower-abdominal pain, fainting with injury, facial swelling, breathing difficulty or a painful erection that does not subside.
Further reading
What is tamsulosin used for?
Tamsulosin is used to ease symptoms from an enlarged prostate (benign prostatic hyperplasia). It relaxes smooth muscle around the prostate and bladder outlet to improve urine flow, but it does not shrink the prostate.
How does tamsulosin work?
Tamsulosin blocks alpha-1A receptors in prostate and bladder-neck smooth muscle, which reduces resistance to urinary flow.
Which products contain tamsulosin?
Products containing tamsulosin on SGMeds include Flomax and Jalyn. Compare their forms, strengths and pack sizes.
How long does tamsulosin take to work?
Tamsulosin can take 1 to 2 weeks to start working.
What are the side effects of tamsulosin?
Common side effects include dizziness and abnormal ejaculation. Headache, weakness (asthenia) and palpitations can also occur, and fainting or swelling of the face, lips or throat (angioedema) need immediate medical attention. Speak to your doctor or pharmacist if you are concerned.
Who should not take tamsulosin?
It is not suitable if you have had an allergic reaction to tamsulosin, a history of low blood pressure on standing, or severe liver problems. If you have low blood pressure, a history of fainting, severe kidney disease, or take erectile-dysfunction medicines or other alpha blockers, ask a doctor or pharmacist before you use it.
What are other names for tamsulosin?
In other countries, tamsulosin is also sold as Flomax Relief and Urimax. Brand names vary between countries, so compare products by their active ingredient.
What does tamsulosin cost in Singapore dollars?
Each product on this page shows a price for each strength and pack size in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs usually cost less per tablet.
Payment and prices →Can I order tamsulosin without a prescription?
Yes. SGMeds does not ask for a prescription to order tamsulosin: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Can I buy tamsulosin online in Singapore?
Yes, here on SGMeds: choose the product, strength and pack, then check out. We deliver to Singapore and Malaysia. Express shipping is tracked and takes up to 1 week, and Regular shipping takes up to 3 weeks.
How ordering works →