Pinealectin, also known as melatonin, is a biological hormone secreted by the pineal gland in the human body, the main role of which is to adjust sleep and increase the body’s resistance.1 Pinealectin can regulate the body’s immune system, can regulate tension and has antioxidant effects. As people grow older, the secretion of pineal gland hormone in the body will decrease, so the elderly will have sleep disorders and immune system decline. At the same time, pinealectin can also regulate the endocrine system, elderly patients can appear endocrine dysfunction and hypothyroidism, depression, dementia, etc. 2, oral pinealectin can mediate the body’s endocrine, also has a certain effect on improving memory. It is recommended that patients take pinealin orally under the guidance of a physician, so as not to affect rheumatoid arthritis or kidney disease, etc.