Jarrow Formulas^® Yum-Yum D3^® Gummies deliver 10 mcg (400 IU) of vitamin D₃ (cholecalciferol) per serving in a delicious gummy. Vitamin D₃ is of critical importance throughout the bodies of growing children (and adults), helping the body to absorb calcium for strong bones, and promoting the health of muscles, skin, brain and the immune system.*