What is Vitamin D3 Spray? Vitamin D is predominately synthesised in the skin through exposure to sunlight. Deficiency in vitamin D is common throughout the UK due to limited exposure to sunlight. For the majority of the year and particularly in winter, vitamin D synthesis becomes almost impossible, especially for athletes who train indoors. Vitamin D has so many benefits, providing support for bones, teeth, muscles and the immune system. Why is ours better? Vitamin D3 is the form of vitamin D that is most readily absorbed by the body. We’ve created an easy to use, peppermint flavoured vitamin D3 spray that effectively enters the bloodstream for maximum absorption and fast action. Each dose contains 4,000iu Vitamin D3, the optimum amount to overcome deficiency. Made in the UK.