Terazosin Hydrochloride Tablets are contraindicated in patients known to be sensitive to alpha adrenergic receptor antagonists, contraindicated in pregnant women, and lactation should be discontinued in lactating women. Terazosin Hydrochloride Tablets are mainly used for the treatment of mild or moderate hypertension, mainly to reduce diastolic blood pressure; can also be used to treat symptoms caused by benign prostatic hyperplasia (BPH). Common adverse reactions to terazosin hydrochloride tablets include weakness, palpitations, nausea, peripheral edema, vertigo, drowsiness, nasal congestion, rhinitis, blurred vision, or amblyopia. Other adverse reactions include: back pain, headache, tachycardia, postural hypotension, syncope, edema, weight gain, pain in the extremities, decreased libido, depression, nervousness, sensory abnormalities, dyspnea, and sinusitis. It should also be noted that: this drug and thiazide diuretics and other anti-hypertensive drugs should be used in combination to prevent the cause of hypotension; it is recommended that this drug is not used in patients with a history of urinary fainting; the first time this drug is administered or discontinued, and re-administered after discontinuation of the drug will occur vertigo, mild headache or drowsiness; the safety and efficacy of children’s use of the drug is still not clear. If you need to use terazosin hydrochloride tablets patients, it is recommended to consult a professional doctor, follow the doctor’s instructions for standardized treatment, not to blindly use their own medication.