Suggested Usage: View Label for 90 Capsules, Gluten Free, GMO Free Vegan, Vegetarian Suggested Usage: View Label for 250 Capsules, Gluten Free, GMO Free Vegan, Vegetarian Vitamin C as mineral ascorbates for sensitive individuals Buffered ascorbic acid combines calcium ascorbate, magnesium ascorbate, and potassium ascorbate to create a neutral pH vitamin C.This special form of ascorbic acid lessens possible gastric irritation in sensitive individuals Buffered ascorbic acid combines calcium ascorbate, magnesium ascorbate, and potassium ascorbate to create a neutral pH vitamin C.