Vitamin D is essential for the maintenance of overall good health. In particular, Vitamin D plays a key role in bone health and in the absorption of calcium and phosphorus, which are required for the development and maintenance of strong bones and teeth. Vitamin D also helps support the immune system and the cardiovascular system. Herbaland Classic Gummy for Kids: Vitamin D is a highly potent formula that provides all health benefits of this vitamin in one juicy serving of fruit-flavored vegetarian gummy.