Andrew Lessman's VITAMIN C 500 plus B-COMPLEX is a 100% additive-free, natural complex of Vitamin C plus all the essential B-Complex vitamins, including our unique absorption-protected Methylcobalamin (Natural Coenzyme Vitamin B12), as well as our metabolically active Folic Acid (Methyl Folate). The Vitamin C in this product is entirely in the form of a water-based mineral ascorbate (Calcium Ascorbate), which is entirely non-acidic, so it is guaranteed to not upset your stomach. This special form of Vitamin C promotes the greatest utilization of Vitamin C without the stomach discomfort, loss of potency and rapid nutrient loss associated with ordinary Ascorbic Acid. Vitamin C is a powerful anti-oxidant that supports the health of numerous body tissues and systems. Finally, because they are easily depleted by stress, including illness and strenuous exercise, and are key factors in the metabolism of food and creation of energy in the body, we include high potencies of all of the B-Complex vitamins.