Terazosin Hydrochloride Tablets may have some adverse reactions when taken for a long period of time, but patients can take it for a long period of time under the guidance of a doctor if there are no obvious adverse reactions and the therapeutic effect of taking this product is good. If patients take it for a long time, the most common adverse reactions that may occur are weakness, palpitations (rapid heartbeat, often accompanied by panic), nausea, dizziness, drowsiness, blurred vision and amblyopia. In addition, a few patients may also experience headache, back pain, tachycardia, postural hypotension, syncope, and other adverse reactions. If the patient has poor therapeutic effect or serious adverse reactions while taking the drug, it should not be continued and the medication should be adjusted by the doctor according to the patient’s condition. However, since Terazosin Hydrochloride Tablets are mainly used for the treatment of chronic diseases with mild and moderate hypertension and benign prostatic hyperplasia, the drug can be taken for a long time under the guidance of a doctor if the therapeutic effect of taking the drug is good and there is no obvious adverse reaction. Therefore, during the period of taking Terazosin Hydrochloride Tablets, you need to follow the doctor’s instructions to use the drug, do not arbitrarily increase or decrease the dosage of the drug, so as not to cause serious adverse reactions.