Calcium, Magnesium, Vitamin D3 and Zinc vegetarian and vegan tablets. Vitamin D3 - 2.5μg / 100iu (50% NRV). Calcium - 500mg (62.5% NRV). Magnesium - 250mg (66.7% NRV). Zinc - 15mg (150% NRV). Our products are manufactured to the high standards required by Trading Standards, UK Legislation and the Food Standards Agency.