Melatonin tablets are taken orally, usually with warm water; 1 tablet once daily, 30 minutes before bedtime. Melatonin is a substance secreted by the body at night that is beneficial in regulating sleep and circadian rhythms. If the amount of melatonin in the body is reduced, it can be used to improve sleep by taking melatonin tablets orally. This medicine is usually taken every night half an hour before bedtime, and the smallest dose of 1 tablet is usually sufficient. This product is not a substitute for medication; engaged in driving, mechanical work, aerial work and other dangerous operators, do not consume before or during the operation; autoimmune disorders and hyperthyroidism should be used with caution; this product contains vitamin B₆, should not be more than the recommended amount or consumed at the same time with the same kind of nutrient supplements Melatonin is not suitable or necessary for every patient with insomnia. The specific usage and dosage varies from person to person, and you need to go to the hospital for scientific treatment under the guidance of your doctor.