Solaray Quercetin 500 mg is a potent antioxidant supplement designed to support immune health, respiratory function, and overall well-being. Each vegetarian capsule delivers 500 mg of quercetin, a bioflavonoid naturally found in fruits and vegetables. Known for its antioxidant and anti-inflammatory properties, quercetin may help support healthy histamine levels, making it beneficial during seasonal changes. This formulation is vegan, non-GMO, and free from artificial colors, sweeteners, and flavors.