NHP Vitamin C Support 1000mg (60). NHP Supplements Ireland. Vitamin C Support is easily assimilated by the body and allows for maximum absorption and effectiveness.. Vitamin C Support is made from magnesium ascorbate which is an alkaline form of vitamin C. - Not to be confused with the more acidic and cheaper form of ascorbic acid which is more difficult for the body to absorb and can act as an irritant.. Vitamin C Support also contains Bilberry which is an excellent antioxidant. Vitamin C is one of the most important vitamins which is essential for optimum health and the efficient functioning of the many different systems of the body.. Rich in bio-flavanoids. Easily assimilated by the body. Contains magnesium ascorbate. Includes magnesium & bilberry extract