Glutamine is a nerve-nourishing drug, it is a B vitamin class drug, this kind of drug can be taken for a long time, in the treatment of neurasthenia or plant nerve dysfunction and other symptoms, each course of treatment can be taken 2-3 months, stopping about a month and a half and then the second course of treatment, the second course of treatment is also eaten 2-3 months, can be taken for a long time. Because as a B vitamin, glutamine is a water-soluble vitamin, once in the body in excess, can be excreted through the urine, will not accumulate in the body caused by poisoning, it is not like fat-soluble vitamin D and vitamin A and other drugs, this drug can lead to accumulation of poisoning when taken for a long time. Menopausal women can also take glutathione to regulate menopausal syndrome.