Vitamins are one of the five major nutrients needed by the human body, which can maintain the normal physiological functions of the human body. They can be divided into two categories: fat-soluble and water-soluble.
At present, there are 14 kinds of vitamins recognized in the world, including vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B9, vitamin C, vitamin D, vitamin E, vitamin K and so on.
07.03.2022 13:23