Kelkin Effervescent Zinc & Vitamin C provides you with 1,000mg of Vitamin C (1250% of NRV) and 15mg of zinc (150% of NRV) in one convenient effervescent tablet. Vitamin C & Zinc have a number of important roles within the body. Vitamin C plays a vital role in immune support, growing and repairing tissues, bones and teeth. It also makes collagen, which is needed for healthy skin, cartilage, and ligaments. While zinc is needed to aid the immune system, support growth, cell division and would healing. Together, these nutrients contribute towards the normal functioning of the immune system while also contributing to the reduction of tiredness and fatigue.