Adults, as a dietary supplement, take one (1) capsule in the morning and one (1) capsule in the evening.

Quercetin is an indirect antioxidant, meaning it works via a different pathway than direct antioxidants such as Vitamin C. Considering this difference, it is okay to take Quercetin and Pterostilbene along with other antioxidant supplements.

Because resveratrol is similar in structure to pterostilbene – and with complementary actions in your body – research suggests it may be beneficial to take them together for activating important longevity genes. Resveratrol is found in our Purple Defense blend of nutrients, as well as a stand-alone ingredient in our Organic Resveratrol. Besides potential longevity benefits, Quercetin and Pterostilbene Advanced is especially useful for seasonal health concerns.

This product was not formulated specifically for pregnant or nursing women. We always recommend consulting with your health care provider before taking a new dietary supplement.

The Stoplight System is a product-labeling program is designed to help you make informed decisions when considering your gut health. While not every product is formulated specifically for gut support, the labels – Green, Yellow or Red – provide a clear guide on how a product might impact digestion. By using this simple color-coded system, you’ll be able to determine which products best fit your personal gut health journey, making it easier to align choices with your individual wellness goals. For more information, visit Dr. Mercola's Gut Guide.