2xPack Altapharma Zinc+Vitamin C Depot Dietary Supplement 120 Capsules2xPack Altapharma Zinc+Vitamin C Depot Dietary Supplement 60 Capsules per pack (120 Capsule supply) As a vitamin, vitamin C is one of the essential substances, ie the body can not produce it by itself and it has to be absorbed through the diet. Vitamin C contributes to the normal functioning of the immune system as well as to protecting the cells from oxidative stress. It also plays a role in normal energy metabolism. Zinc is a so called trace element