This superior Vitamin C formula has a timed-release effect with a rapidly released first stage and a gradual release of the remaining second stage over a 12-hour period. This is achieved through the blend of Vitamin C derived from natural ascorbic acid, rose hips, and acerola cherries. Calcium carbonate and magnesium oxide have been added to buffer the acidity of Vitamin C. The bioflavenoids aid in the absorption of the Vitamin C. This Vitamin C is excellent in providing antioxidant protection all day long. Recommended use: Take one capsule up to twice daily with meals or a glass of water. 250 Capsules. Suggested Retail $24.99 15% Online Discount $21.44