Generic Flomax is used to treat enlargement of the prostate gland in men, a condition called benign prostatic hyperplasia or BPH. It is not for use in women. It works by relaxing muscles in the prostate and bladder neck. This improves urine flow and reduces BPH symptoms.

Treating symptoms of benign prostatic hyperplasia (BPH) in men who have an enlarged prostate gland. Dutasteride/tamsulosin is a 5 alpha-reductase inhibitor and alpha-blocker combination. The 5 alpha-reductase inhibitor (dutasteride) works by lowering levels of a hormone called dihydrotestosterone (DHT), which is a major cause of prostate growth. The alpha-blocker (tamsulosin) works by relaxing muscles in the prostate and bladder. Dutasteride/tamsulosin helps to decrease the size of the prostate and reduce symptoms of BPH.