Japanese Glycerin Pills are mainly used to supplement Vitamin A and Vitamin D to the body. The main ingredients of Japanese Glycerin Pills are Vitamin A and Vitamin D. 1. Vitamin A: It helps to maintain the health of human skin and mucous membranes, and maintains normal vision and dark vision. Vitamin A also helps to maintain normal immune system function and reproductive system function. Children lacking vitamin A, the elderly, pregnant women, and patients suffering from night blindness can take appropriate vitamin A supplements. 2. Vitamin D: can promote the body for calcium, phosphorus absorption, promote bone growth and development, for the lack of calcium patients, such as children with rickets, osteochondrosis, fast-growing adolescents, etc., can be appropriate to supplement vitamin D. For normal people, daily maintain a balanced diet and outdoor exercise, basic intake of vitamin A and vitamin D required by the human body, so it is not recommended to preferred way of drug or health supplementation. Vitamin A and vitamin D are fat-soluble vitamins. Unlike water-soluble vitamins, which are excreted in the urine, fat-soluble vitamins accumulate in the body and may cause toxicity if ingested in excess. For example, excessive intake of vitamin A can cause hair loss, headache, dry skin and other symptoms. Therefore, before choosing to take Japanese glycerin pills, you should first clarify whether you need to supplement these two vitamins. If you are only deficient in a single type of vitamin, targeted supplementation is recommended, and Japanese Liver Oil Pills are not recommended to prevent excessive intake.