Imperfect box Zinc, vitamin C and vitamin D3 help support the immune system, and vitamin C reduces tiredness and fatigue Zinc: Great source of zinc, which contributes to the normal function of the immune system. Contains 7.5mg of Zinc Vitamin C: Rich in naturally occurring vitamin C from acerola cherries, and Nasturtium extract. Contains 50mg of vitamin C Vitamin D: Contains 5ug of natural vitamin D3 powder (from plant source) Convenient one-a-day tablet