Taking high amounts of vitamin C can be a challenge for individuals who have sensitive or compromised digestive systems. For these individuals, Thorne Research has developed Buffered C Powder. Each scoop supplies the same pure, crystalline vitamin C found in Thorne Research's Pure Ascorbic Acid, along with a blend of calcium, magnesium, and potassium mineral ascorbates that serve as a buffer, allowing sensitive individuals to take large amounts of vitamin C with ease and comfort. In addition to 2,350 mg of vitamin C in each scoop, Buffered C Powder provides 350 mg each of calcium and magnesium and 99 mg of potassium.