Get your nutrition from America's #1 gummy vitamin brand‡! Each serving of vitafusion Vitamin D 3000 IU provides 375% daily value (3000 IU) of Vitamin D3! Also known as the “sunshine vitamin,” Vitamin D3 aids in the absorption of Calcium and Phosphorus which help to form and maintain strong bones and teeth. It may also play a role in maintaining strong muscles. Vitamin D also helps support muscles and the immune system.