Tamsulosin belongs to a group of medications known as alpha 1A receptor antagonists. It is used to treat symptoms of enlarged prostate (benign prostatic hyperplasia [BPH]).
As the prostate gland enlarges, it can put pressure on the urethra, the tube that carries urine away from the bladder to be expelled. This causes a weak urine stream or a feeling of not being able to empty the bladder completely. Tamsulosin helps to relax the muscles in the prostate and the opening of the bladder. This helps the stream of urine to flow more freely and the bladder to be emptied completely.
The recommended dose for tamsulosin controlled-release tablets is 0.4 mg once daily, taken with or without food taken at the same time each day.