In the event that its not indeed inconvenience guide your specialist before taking any drug. Flomax 0.4mg 20 Caps Generic Name: tamsulosin (oral) (tam soo LO sin) Brand Names: Flomax What is tamsulosin? Tamsulosin is in a get-together of medicines called alpha-adrenergic (AL-fa promotion ren-ER-jik) blockers. Tamsulosin loosens up your veins and channels with the objective that blood can more adequately pass through them. It moreover loosens up the muscles in the prostate and bladder neck, making it less requesting to urinate. Tamsulosin is used to improve pee in men with generous prostatic hyperplasia (broadened prostate). Tamsulosin may in like manner be used for purposes other than those recorded in this prescription aide.