Ester-C with D3 is a bone and immune health complex from American Health. With patented Ester-C this form of vitamin C is a uniquely gentle dual-action formula in a once daily tablet. It delivers 1 000 mg of the active immune system support of pH-neutral non-acidic Ester-C. It also features 5 000 IU of vitamin D3 a potent and bio-available form of vitamin D. Vitamin D intake helps maintain healthy bones and promotes calcium and phosphorus absorption. No gluten yeast wheat milk milk derivatives lactose soy egg grapefruit sugar preservatives artificial color artificial flavor or sodium. Non-GMO.