Aller-Aid with Quercetin, 90 Capsules, Oregon's Wild HarvestOregon's Wild Harvest Aller Aid with Quercetin An all natural response to seasonal changes. Your body's normal immune response to spring, summer, fall and even winter can often feel like a full frontal challenge. The beauty of Quercetin and Nettle (Freeze dried) is their ability to support your body's normal histamine producing response. NAC packs an additional punch by breaking down mucous and increasing antioxidant activity. Features: Non GMO bovine