Vitamin D is one of the most important nutrients for our health, providing support to bones, teeth, muscles and our immune system. It’s mainly absorbed through exposure to sunlight, however where exposure is limited deficiency is common, particularly for athletes who train indoors. This is where supplements can help. Vitamin D in spray form is absorbed quickly as it enters the bloodstream directly through the lining of the mouth. Each dose contains 4,000iu, the optimum amount to overcome deficiency.