Its generic name is Tamsulosin hydrochloride; various pharmaceutical companies then market it under different names eg Diffundox, Flomax. It's an alpha blocker-relaxes muscles surrounding bladder to allow easier flow (elder gentlemen's problems)
I wonder where OM sources his?

It is not in Malaysia-the search through doctors has been made.
Next step- visit a urologist & revise the situation. Any ideas there then?