Boost your immune health with Spring Valley Quercetin. Quercetin is a well-known antioxidant bioflavonoid that acts as a free radical scavenger, supporting healthy sinus, respiratory, cardiovascular, and immune system function. Known for its anti-inflammatory properties, Quercetin helps reduce the release of histamines - compounds released by cells in response to allergic and inflammatory reactions, thereby reducing inflammation-related discomfort. This supplement is enhanced with zinc for additional immune support. Choose Spring Valley Quercetin for a powerful combination of antioxidants and zinc.