Best-selling supplement ALLER-C is a potent and effective combination formula designed to help maintain normal respiratory and sinus function. Aller-C features Isoquercitrin, a clinically studied nutraceutical offering the benefits of quercetin with superior absorption and bioavailability, to help promote cellular antioxidant defenses and a normal histamine response. Aller-C’s combination formula also includes Vitamin C for immune support, Citrus Bioflavonoids to help maintain capillary stability, and Bromelain to promote inflammatory balance. This supplement can be used for maintaining and supporting the proper levels of enzymes and physiological factors necessary for normal respiratory and sinus function. during seasonal challenges.