Tamsulosin Hydrochloride

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** The hydrochloride salt of tamsulosin, a sulfonamide derivative with adrenergic antagonist activity. Tamsulosin selectivity binds to and blocks the activity of alpha1 adrenoreceptors in the human prostate and bladder neck; blockade of these adrenoceptors can cause smooth muscle in the prostate and bladder neck to relax, resulting in an improvement in urinary flow rate.

**Synonyms:** - Flomax - Flomax - TAMSULOSIN HYDROCHLORIDE - tamsulosin hydrochloride