These days, everyone is focused on maintaining immune and respiratory health, and our quercetin has you covered. Quantum Health’s Quercetin 500+ is formulated with 500mg of Quercetin, along with 100 mg of Vitamin C and 11 mg of Zinc. Or, try our maximum-strength Quercetin 750+, which contains 750 mg of Quercetin, along with 200 mg of Vitamin C and 11 mg of Zinc. Quercetin is a flavonoid antioxidant that has been shown to have immune-supportive properties. It has been suggested to support the immune system by increasing the production of antioxidants that help protect the body against oxidative stress and cellular damage. Quercetin may also stimulate the production and activity of certain immune cells, such as natural killer cells and T cells, which help to fight infections and support the overall function of the immune system. Studies have also shown that it may aid in promoting gut health, which is an important component of a healthy immune system.