Life Extension Buffered Vitamin C Powder, buffering minerals, calcium, magnesium, potassium zinc, for sensitive stomachs, gluten free, non-GMO, vegetarian, 454 grams, about 84 servings About this item The sensitive vitamin C ? If you have a sensitive stomach, it can be a challenge to ingest higher amounts of vitamin C. Our Buffered Vitamin C Powder formula includes four buffering minerals that, when mixed with water, are gentler on sensitive stomachs. What is ascorbic acid? ? Vitamin C, or ascorbic acid, supports your immune system and helps maintain a healthy heart. This essential vitamin also promotes iron absorption and is vital to collagen production that supports skin and joint health. Cellular protection ? Vitamin C is a powerful antioxidant that scavenges free radicals in the body and protects tissues from oxidative stress. Studies have shown that people with higher vitamin C levels are more likely to live longer, healthier lives. Ingredients matter ? We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA?and a Certificate of Analysis is available for every one.???? Live your healthiest life ? We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. That?s why so many of our formulas feature specific ingredients and amounts based on scientific studies Vitamin C, or ascorbic acid, is a white, crystalline, water-soluble substance found in citrus fruits. As an antioxidant, vitamin C scavenges free radicals in the body and protects tissues from oxidative stress. Vitamin C also promotes the absorption of iron, while inhibiting its oxidation. Vitamin C is a vital cofactor to the formation of collagen, the connective tissue that supports arterial walls, skin, bones, and teeth. Vitamin C Powder contains four buffering minerals, in addition to ascorbic acid. When mixed with water, this product produces a reduced-acid solution that is non-irritating to the stomach and intestinal lining. The minerals also make it a more pleasant-tasting and healthful drink. The substances used in this product make it effervesce for a short while when it is mixed with water.