Hello,
Flomax contains tamsulosin which is used for benign prostatic hyperplasia. The time for maximum concentration is reached by 4 to 5 hours under fasting conditions and by 6 to 7 hours when these capsules are administered with food.
So you should have the effect soon. If you have the symptoms even after 10 days of treatment, talk to your urologist as you may need dose enhancement.
I hope it helps. Take care and regards.
It sounds like you have a UTI or a bladder infection. Flowmax should work within a couple/few hours, although it varies. You need to drink a TON of liquids (caffeine free) and flush your system. The flowmax isn't just going to magically make you pee... you need to give it liquids TO pee.
Good luck to you.
LMNO
*Get your doctor to do a urinalysis and check for infection. Not being able to pee, or only 'drops' coming out is a clear sign of infection, at the very least.