Manufacturer's Description: Ester-CŪ is a unique form of buffered Vitamin C with metabolites. Metabolites are compounds derived from nutrients that are normally created in the body. Research has demonstrated that this combination of non-acidic Vitamin C with metabolites is well absorbed and retained in blood cells and tissues. We have further enhanced this superior product with the synergistic blend of Bioflavonoids, Acerola, Rose Hips and Rutin. Supplement Facts Serving Size:1 cap Servings per Container: 180 Ingredient Amount % Daily Value** Vitamin C 500mg 830 Calcium 57mg 6 Citrus Bioflavonoids 200mg † Acerola Powder 75mg † Rose Hips Powder 75mg † Rutin 50mg † ** Percent Daily Value is based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. † Daily Value not established. Manufacturer's Directions: As a dietary supplement, take 1 capsule 1-3 times daily, preferably with meals.