Vitamin C is called Ascorbic acid.

Vitamin C is one of the essential nutrients(we need feeding up because it is not produced in our body). Mammels and plants can use Vitamin C which is compounded from glucose but human cannot compound Vitamin C in the body.

There are various enzymes relating to Vitamin C compound in a human body but enzymes which are catalizing the final step (gulonolactone oxidase) cannot fulfill its function.

Vitamin C is water soluble and it is much contained in lemon juice, parsley, various sorts of fruit, cabbages, flower of vegetables, green pepper, strawberry, raddish, leaves, fresh vegetables. It is hardly contained in milk, eggs, flesh and meat.

Not only we can take injest various types of vitamin but also all kinds of vitamin are sold on the market. However, in the case of drinks and granules we can generally take injest Vitamin C with much sugar, it would not be good for your health. Pure Vitamin C tastes too much sour, so it is difficult for us to keep using internally.

We mostly abstract sugar from sugar plant and sugar beet. But we abstract Xylitol from a birch and oak tree.

In the first place Xylitol is discovered during the World War II but is regularized after Markinen, who was International Protection Dentistry Institute Chief and Dental college professor, discovered the effects of Xylitol in early years of 1970. The price of Xylitol is roughly so expensive as 12~15 times comparing to the price of sugar. All over the world Xylopin Company in Finland began to produce a large quantaty of goods for the first time. Xylitol chewing gum is first issued in 1975. Finland is eager for children to use Xylitol chewing gum after meal of before bedtime. Several European nations, the USA, and Japan have introduced Xylitol gum. They are producing it and also they are selling it. Official Certification System is put in operation in many European Dentist Associations. (for example in Finland, Norway,Sweden, etc.)