Terazosin is really an alpha-adrenergic blocker. Terazosin may be used to deal with high blood pressure levels (high blood pressure). Terazosin might be provided with along with other blood pressure level medication. Terazosin is used to reinforce peeing in men with benign prostatic hyperplasia (bigger prostate). Terazosin could also be used for activities not indexed in this medications advise.