Thorne's Quercetin Phytosome helps stabilise mast cell membranes that store and release histamine and has antioxidant and other beneficial effects.*
The distinct advantage attributable to Thorne's Quercetin Phytosome is its advanced phytosome technology. Quercetin Phytosome combines quercetin with sunflower-sourced phospholipids to create a phytosome complex that easily crosses the gut barrier.*
For more than 30 years, Thorne has been trusted by health-care practitioners who prescribe our products to their patients. In addition, our products are now recommended by U.S. National Teams and multiple professional sports teams for their elite athletes. Thorne products are a testament to Thorne's mission to provide high-quality supplements that are tested for quality, safety, and efficacy.
Because of its phytosome technology, Thorne’s Quercetin Phytosome features better absorbability than many other quercetin supplements.
Quercetin Phytosome, a unique quercetin extract with significantly better absorption than regular quercetin, has been clinically studied for respiratory health and sports performance.
We develop better standards for higher quality ingredients. Thorne cares deeply about where our ingredients come from. We partner only with suppliers whose practices emphasize quality, science, and responsibility. Better ingredients means better potency, absorption, and digestibility - and ultimately better health.
We make our own products to ensure full supply chain transparency. For more than 30 years, we have invested in clean manufacturing practices. We refuse to use ingredients that can inhibit absorption. We perform our final production in the United States. Our Charleston, South Carolina, manufacturing facility is GMP certified by NSF International, a well-recognized independent third-party certification organization.
We perform four rounds of testing for each product we make – far above the industry standard. Thorne has invested in two state-of-the-art in-house laboratories that enable us to conduct four rounds of testing, including raw material testing, in-process batch testing, finished product testing, and expiration date stability testing for each lot of product that we make.
We're thinking sustainably to protect our environment. We believe the environment should never be compromised for the sake of business gain. At Thorne, we believe that doing our part to protect the environment and its most valuable resources goes hand in hand with our product quality standards.
