Doxepin hydrochloride tablets are effective in the treatment of depression and anxiety and have some adverse effects. Drowsiness and anticholinergic reactions such as hyperhidrosis, dry mouth, dizziness, blurred vision, and difficulty urinating may occur during the initial phase of treatment. Doxepin hydrochloride tablets are a tricyclic antidepressant. Its main function is to inhibit the reuptake of 5-hydroxytryptamine and norepinephrine in the central nervous system, thus acting as antidepressant, anxiolytic and sedative. Some adverse reactions may occur during treatment, among which drowsiness, sweating, dry mouth, tremor, dizziness, blurred vision, difficulty in urination and constipation are more common. In addition, allergic reactions, rashes, drug rashes, papules, and even hives-like changes, as well as upright hypotension, may occur. In addition, seizures, bone marrow suppression, or toxic liver injury may occasionally occur. Patients should be contraindicated if they have hepatic or renal dysfunction. It is also contraindicated if there has been a recent acute myocardial infarction and epilepsy or glaucoma. Doxepin hydrochloride tablets should be used under the guidance of a doctor, and if there is any discomfort in the process of taking it, you should go to the hospital in time.