Our Vitamin C 500 mg, Tangy Orange Melts, utilizes sodium ascorbate, which� is a buffered (non-acidic) form of C that does not contribute to gastric irritation. Although each MicroLingual tablet contains very little sodium (only 1% of the Daily Requirement), it is helpful in offsetting the natural acidity of Vitamin C,� creating a smoother, less acidic taste. Sodium ascorbate is a fully reacted, truly buffered form of vitamin C. The sodium in this product differs from common table salt in that it is not combined with chloride like the �salt� most often associated with hypertension. Additionally, Tangy Orange Melts are formulated with a proprietary blend including Acai Berry, Acerola Cherry and Citrus Bioflavonoids. NO sugar added; only sweetened with a little stevia. This is preferable to most �chewable� vitamin C products that typically are loaded with lots of sugar.