Source Naturals Activated Quercetin, for Seasonal & Immune Support – 100 Capsules – Seasonal support supplement featuring quercetin, a natural histamine blocker, helping to inhibit histamine release, along with key additional ingredients for immune support. – 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. – Well Made Supplement: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance. – Over 40 Years of Trust. Source Naturals was created in 1982 by CEO Ira Goldberg to support everyones potential to enjoy optimal health. – Manufactured in the USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration (FDA).