Maximuscle Vitamin D3 tablets, often considered a hormone rather than a vitamin due to vitamin D being responsible for regulating phosphate and calcium in the body. Officially, vitamin D is classed as a fat soluble vitamin which is obtained in part, from the diet but mostly from direct sunlight. Depending on seasonal changes, geographical location and lifestyle, the vitamin D availability can become compromised. Along with the regulatory function, Vitamin D has a host of other beneficial attributes, including: Contributes to the maintenance of normal muscle function. Contributes to the maintenance of normal bones. Contributes to the normal function of the immune system. The reference nutrient intake (RNI) for vitamin D is 10μg per day for anyone over the age of 1. The NHS suggest that vitamin D deficiencies do occur and supplementation with 10μg/d should be considered. Based on the scientific literature, active individuals at risk of a deficiency may benefit from supplementing with a higher dose. Supporting Muscle Function, Bones and the Immune System 5000IU Daily Serving Vitamin D3 (125μg) Helping to Regulate Phosphate and Calcium in the Body 100% Maximuscle Guarantee - we\\\'ve tested every single batch for banned substances Each product is Informed-Sport accredited with LGC Certificate INGREDIENTS: Bulking agent: Maltodextrin, Vitamin D3 prep. (Maltodextrin, starch, sucrose, cholecalciferol), Bulking agent (cellulose), Anti-caking agent (magnesium stearate).