Oral antihypertensive. Adverse effects include syncope, postural hypotension, depression, sleep disturbance, and, rarely, impotence.
A drug used to treat mild to moderate high blood pressure and a noncancerous prostate disease called benign prostatic hyperplasia (BPH). Terazosin (Hytrin) is an alpha blocker, a drug that blocks nerve endings. Terazosin lowers blood pressure by widening blood vessels and reducing the pressure within.