Lactase is not to be taken lightly. Lactase, also called β-galactosidase, is a digestive enzyme in the human body, whose main function is to digest lactose and hydrolyze lactose into galactose and glucose that can be absorbed by the body. Normal human body is there. Normal people do not have to eat lactase, eat more may cause intestinal dysfunction, abdominal distension, nausea, anorexia and vomiting and other symptoms. If the body lactase content is low, will be on milk, milk powder and other dairy products will be indigestible, resulting in gastrointestinal abnormalities, query bloating, abdominal pain, diarrhea. Appropriate supplementation of lactase can promote gastrointestinal digestion. If lactase supplementation does not completely relieve the symptoms of indigestion, it is recommended to avoid dairy products as much as possible. Lactase is important, not to lack or too much, must be used wisely according to the actual situation. To use lactase, you need to follow your doctor’s instructions and avoid taking it on your own.