Dr Pieter Dahler, DDS, MD, ND (hon) PhD says:

Vitamin C is generally a misnomer as it is only ASCORBIC ACID. It is the government’s doing that this fallacy exists. A true and HONEST Vitamin C is a Complex of several nutrients:
vit. P is the bioflavanoid such as Rutin and maintains blood vessel integrity, vit K is the clotting factor, vit J is the oxygen carrying capacity factor, several enzymes belong in this complex such as tyrosinase (also called the copper factor) and is the drenal gland factor. Rating taurosinase is a better measure of a true vit C supplement or food. Ascorbic Acid is an antioxidant. It is like the shell of an egg, the rest of the egg is missing. It’s artificial version has no therapeutic value. Get it from natural sources. Too much anti-oxidants is the cause of lack of oxygen, read that word again, and a lack of oxygen is a potential cancer cause, as the natural death of cells (apoptosis) is prevented in an oxygen deficient environment.