Bluebonnet BB-553 Nutrition Super Quercetin Vegetable Capsules, Vitamin C Formula, Best for Seasonal & Immune Support, Non GMO, Gluten Free, Soy Free, Milk Free, Kosher, White, 90 Count (Pack of 1)

Customers find the supplement effective for allergy relief, particularly for chronic sinusitis, and appreciate its anti-inflammatory properties. They describe it as a consistently good supplement that works well, with one customer noting it keeps mast cells from exploding. Customers also like its great price.