Melatonin tablets are generally not able to regulate good sleep, but have a certain role in improving sleep. Melatonin is a hormone secreted by the human body at night, when the function of secretin in the human body declines, the level of melatonin will gradually decline. Melatonin tablets are a hormone secreted by the pineal gland, patients with insomnia, appropriate use of melatonin tablets can have some relief. Prolonged overdose of melatonin tablets can cause dizziness and headache, drug dependence, reduce male libido and fertility, and increase the risk of stroke. Minors, pregnant women and lactating women are prohibited from taking melatonin tablets, and do not drink alcohol while taking melatonin tablets. Although melatonin can improve sleep, it is not effective for all people, so when you find that you have poor sleep, you should go to the hospital to consult a physician, do not take medication without authorization.