Terazosin hydrochloride, a quinazoline derivative, is a long acting α
1-selective adrenoceptor antagonist with a similar pharmacodynamic profile to prazosin [
P0938]. Terazosin is known to relax vascular and prostate smooth muscle through blockade of α
1-adrenoceptors, and lowers blood pressure by decreasing peripheral vascular resistance. In
in vitro experiments, terazosin has been shown to contractions in human prostatic tissue, and it is used in the treatment for prostatic hyperplasia (BPH). In addition, some studies indicate that α
1-selective adrenoceptor antagonists show suppression of human prostate cancer cell growth. (The product is for research purpose only.)