https://botanicals.one/best-vitamin-d3-supplement/ Vitamin D3 is one of the best immunity boosters and lung protectors. It is called the Sunshine Vitamin and when combined with Vitamin K2 can help you prevent heart attacks, prevent diabetes symptoms, boost your immune system, prevent depression, build healthier bones and teeth. It also helps asthma and muscle fatigue. #vitamind3 #vitamink2 #d3k2