The generic name of Terazosin is Terazosin Hydrochloride, and it is contraindicated for people who are allergic to Terazosin and for women during pregnancy. Terazosin hydrochloride is mainly used in the treatment of mild or moderate hypertension, can be combined with thiazide diuretics or other anti-hypertensive drugs, but also can be used alone when other drugs are ineffective or unsuitable; currently known to be allergic to a-adrenergic receptor antagonists, prohibited; prohibited in women during pregnancy; Adverse reactions: common ones include palpitations, weakness, nausea, vertigo, drowsiness, nasal congestion, peripheral edema and headache, tachycardia. Precautions: combined with other anti-hypertensive drugs, the dose of this drug should be reduced; people with a history of urinary syncope are not recommended to apply this drug; when applying this product for the treatment of benign prostatic hyperplasia, the possibility of prostate cancer should be examined first; the occurrence of abnormal erection after the application of this product should be disposed of by a doctor in a timely manner. Patients are recommended to apply under the guidance of a doctor, and should seek medical treatment as soon as possible for any adverse reactions during the application process.