SEASONAL SUPPORT - Seasonal support supplement featuring quercetin, a natural histamine blocker, helping to inhibit histamine release, along with key additional ingredients for immune support. This product contains, bromelain, which has been shown in preliminary studies to support a healthy inflammatory response. It also contains activated Quercetin also contains vitamin C, which supports immune health. PLANT-SOURCED - Activated Quercetin’s main ingredient, quercetin, is a unique bioflavonoid derived from plant sources which has been shown in human cell culture studies to inhibit histamine release. SUGGESTED USE. 3 capsules 1 to 2 times daily in divided doses, between meals. If you have a delicate, easily irritated stomach, take with meals. TRUSTED FOR OVER 35 YEARS. Source Naturals was created in 1982 by CEO Ira Goldberg to support each individual's potential to enjoy optimal health. MANUFACTURED IN THE USA. Our facility is located in Scotts Valley California.