Doxepin tablets have the effect of treating all kinds of depression as well as improving anxiety and treating insomnia. Doxepin tablets can inhibit the central nervous system, reduce the uptake of adrenaline, so that the neurotransmitter concentration increases, play the role of antidepressant, improve anxiety; for anxiety accompanied by abnormal physical symptoms, such as chest tightness, palpitations (heartbeat accelerated, often accompanied by panic), shortness of breath, and so on, but also has a certain efficacy. Doxepin tablets can also play a sedative, hypnotic and muscle relaxation effect, so also have a certain effect on insomnia. At the initial stage of administration, patients are prone to dry mouth, excessive sweating, tremor and postural hypotension. Therefore, the medication must be used in accordance with the doctor’s instructions, and should not be discontinued blindly. People with epilepsy, heart disease, glaucoma, hyperthyroidism should avoid taking this drug. Children, pregnant women and breastfeeding women should not use this drug. Work at heights and driving should be avoided while the drug is in use. The medication should not be used for too long, otherwise it will cause damage to the liver and kidney function, please follow the doctor’s instructions for the specific use of the drug.