What is tamsulosin (oral)?
Tamsulosin is in a group of drugs called alpha-adrenergic (AL-fa ad-ren-ER-jik) blockers. Tamsulosin relaxes your veins and arteries so that blood can more easily pass through them. It also relaxes the muscles in the prostate and bladder neck, making it easier to urinate. Tamsulosin is used to improve urination in men with benign prostatic hyperplasia (enlarged prostate). Tamsulosin may also be used for purposes other than those listed in this medication guide.