Viridian Nutrition Extra C 550 mg - 90 capsulesExtra C is a highly effective form of vitamin C. It contains citrus bioflavonoids and special fatty acids that ensure better absorption and absorbability. The addition of lipid metabolites increases bioavailability, making vitamin C absorbed by the human body more quickly and retained more than its other traditional forms. Benefits: highly effective form of vitamin C provides better absorption supported by human clinical research 100% natural