HistaQuel® is a comprehensive formula providing a multi-faceted, systemic approach to supporting healthy mast cell function and histamine response.* Promotes healthy amount of histamine release by supporting healthy mast cell function* Supports healthy level of histamine absorption by blocking histamine receptors (via competitive inhibition)* Multi-Faceted Mast Cell & Histamine Response Support - A comprehensive approach to support healthy mast cell function, immune health and histamine response systemically.* This holistic approach combines two proprietary complexes for dual mechanisms of action.* Mast Cell Secure Complex - Mast Cell Secure Complex promotes healthy amount of histamine release by supporting healthy mast cell function and balanced immune support.* HistaCheck Histamine Absorption Complex - Supports healthy level of histamine absorption by supporting a histamine block of receptors (via competitive inhibition).* Six Clinically Researched Flavonoids & Herbs - Includes Quecefit quercetin phytosome, nettle leaf, perilla seed, black cumin, luteolin, and fisetin supplements. Quercetin Supplement with 20x Increased Absorption - The form of quercetin in this product demonstrates 20 times increased absorption compared to standard Quercetin in published research.* Vegetarian & GMO-free formula. *This is a statement of nutritional support. This statement has not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases. Individual results may vary.