Aller-C® provides quercetin and vitamin C for respiratory, sinus and histamine support.• Supports healthy respiratory function• Supports healthy clear sinus• Offers Isoquercitrin, for improved bioavailability• Promotes cellular antioxidant capacity• Contributes to a healthy histamine response• Can support the body during seasonal challengesAller-C contains quercetin as Isoquercitrin, as well as vitamin C, to support the immune system and contribute to a healthy histamine response. Isoquercitrin is a highly available and absorbable form of quercetin, that can have a positive effect on allergic reactions. As a flavonoid it contributes to improve the body’s antioxidant capacity, and together with vitamin C, may boost the immune capacity and lower the inflammatory response during seasonal challenges.