Vitamin D is an essential vitamin that supports various areas of wellness. It assists in calcium absorption and helps strengthen and keep strong teeth and bones. Additionally, Vitamin D is crucial in the functioning of the immune system, helping to defend against infections and illnesses. Furthermore, Vitamin D has been proven to play an important role with regard to mental well-being, possibly helping to reduce the chance of developing depression. Steadfast Nutrition is a renowned sports nutrition company that provides one of the highest levels of vitamin D supplements in India.