Doxepin, also known as doxepin hydrochloride tablets, is a prescription drug that can be purchased with a doctor’s prescription from a hospital or pharmacy that carries the drug. 1. Efficacy: doxepin hydrochloride tablets belong to the nervous system disease treatment drugs, mainly in the central nervous system, often used to treat a variety of depressive episodes, anxiety, local itching, dermatitis and other diseases, but also can be used for sedation and sleep, and on the treatment of peptic ulcers have a certain effect. 2.Adverse reactions:If overdose of doxepin hydrochloride tablets may cause drowsiness, dry mouth, fatigue, mood changes, taste changes, local itching and burning of the skin, excessive sweating, tremor and other adverse reactions. 3. Contraindications: The drug has anticholinergic effect and can be detected in blood after topical application, so it is contraindicated for untreated narrow-angle glaucoma or those with tendency to urinary retention, cardiac insufficiency, severe hepatic and renal injury, and those with history of epilepsy. The drug is contraindicated in people with a previous history of severe drug allergy, pregnant and lactating women, children. It is recommended to prohibit high-intensity sports and work during the use of the drug, and should not drive a motor vehicle. Heart, liver and kidney function tests should be performed regularly. Patients should follow the doctor’s instructions to use the drug cautiously, if the use of the drug after the emergence of serious adverse reactions promptly go to the hospital to seek medical attention.