Two Extra Strength D3 gummies provide 75 mcg (3000 IU) - 375% daily value - of Vitamin D per serving. Vitamin D, also known as the sunshine vitamin, aids in the absorption of calcium to help support strong bones and teeth. Vitamin Better! At vitafusion, we believe taste and nutrition can be fused together to deliver the best vitamin experience, ensuring it’s an easy and delicious part of your day.