• Healthy histamine response^†
• Sinus, lung, and respiratory function
• Immune function and cellular health^*

Quercetin with Vitamin C Extra Strength features even more immune-supporting quercetin compared to our original formula.^*

Features Our Exclusive GammaSorb^® Delivery System
GammaSorb is a plant-based material that binds to nutrients, making them more easily absorbed and bioavailable for optimal benefits. It has been shown to increase the absorption of certain hard to absorb (fat soluble) dietary ingredients. It is included in this product to help deliver benefits that support your overall health.^*

Click here to learn more about GammaSorb.

Extra Strong Dual-Action Immune Support^*
Quercetin and vitamin C are two of the most important immune-supporting nutrients in the world. With this formula, we’ve made them even more effective to help fortify your immune defenses every day.^*

Quercetin is highly regarded for immune support.^* However, quercetin is fat-soluble and very difficult for the body to absorb, which is why we’ve combined it with our unique GammaSorb delivery system. With GammaSorb, quercetin lives up to its fullest potential.

Vitamin C is a key nutrient for healthy immune function, so getting consistent levels is best for reliable, everyday support. As a bonus, vitamin C also aids in quercetin absorption, making it even more effective.^*

^{†Supports healthy levels already within normal range.}