Vitamin D is a crucially important vitamin which the body can not make by itself. We need to get vitamin D from the food we eat (difficult to do without taking in excess calories) or from regular exposure to bright sunlight. In this country it is difficult to get enough powerful sunlight for optimal Vitamin D production even on the brightest of Summer days. Supplement with a high quality Vitamin D supplement to help support normal bone health and immune system function all year round. Fitness Pharma Vitamin D3 is a top quality Vit D supplement which gives you the support you need. Vitamin D is a crucially important vitamin which the body can not make by itself. We need to get vitamin D from the food we eat (difficult to do without taking in excess calories) or from regular exposure to bright sunlight. In this country it is difficult to get enough powerful sunlight for optimal Vitamin D production even on the brightest of Summer days. Supplement with a high quality Vitamin D supplement to help support normal bone health and immune system function all year round. Fitness Pharma Vitamin D3 is a top quality Vit D supplement which gives you the support you need.