Terazosin reduces obstruction of the bladder outlet without affecting bladder contraction, can reduce total peripheral vascular resistance, and lowers blood pressure. Its side effects include headache, weakness, flu-like, palpitations, nausea and vomiting, edema, dizziness, dyspnea, impotence, drowsiness, dry mouth, abdominal pain, dyspepsia, sweating, arthralgia, and arrhythmia. Terazosin Hydrochloride Capsules can be used for the treatment of benign prostatic hyperplasia, and also used in the treatment of hypertension, either alone or in combination with other anti-hypertensive drugs such as diuretics or adrenergic blockers. It is contraindicated in patients who are allergic to terazosin, and care should be taken when this product is taken by lactating women, as the drug may pass into breast milk. If you need to use Terazosin Hydrochloride Capsules, please consult a professional doctor, follow the doctor’s instructions, the rational use of medication.