Vitamins​ are a kind of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions.

As we known Vitamin C is one of water-soluble Vitamin, also called ascorbic acid or Vitamin C. Our body can’t produce Vitamin C at all. It is found in many fruits and vegetables, we can’t gain enough Vitamin C from fruits and vegetables so that we meed take dietary supplements to meet our needs from the body.