What is Vitamin D3? Vitamin D3 is a fat soluble vitamin which is produced underneath the skin following sun exposure. It is also found in small amounts in many foods such as salmon, mackerel, sardines, eggs and milk but can be consumed in high amounts through supplementation. Each softgel provides 2500iu of vitamin D3 in liquid form. Vitamin D3 Benefits Vitamin D3 has a number of key health benefits including; contributing to the normal absorption and utilisation of calcium and phosphorus, contributing to normal calcium levels, contributing to the maintenance of normal bone and muscle function, and contributing to the normal function of the immune system and cell division. Who are Vitamin D3 softgels suitable for? Many of our customers purchase Vitamin D3 with other vitamins or minerals including calcium and phosphorus. It is also a popular addition to any Sports and Performance bundle or Muscle and Fitness package.