Quercetin UltraSorb - QUS9
- Supports healthy mast cell stabilization and immune health‡
- Highly bioactive flavonoid offers antioxidant support for cellular health‡
- Provides 300 mg of bioavailable Quercetin Phytosome™ (QuerceFit® per capsule
- enhanced-absorption and bioavailable quercetin
Indications
- Ages 18 and up
- Supports healthy immune function and cellular health‡
Suggested Use
As a dietary supplement, take 1 capsule, 1-2 timesdaily, with meals.
Verifiable Science
Quercetin UltraSorb contains the patented QuerceFit® quercetin-phospholipid complex forenhanced absorption and bioavailability. The proprietary phytosome technology combines quercetin from Sophora japonica flower extract and phospholipids from sunflower in a 1:1 ratio, promoting resistance to degradation in the digestive tract and efficient absorption across membranes. A randomized crossover human pharmacokinetic study compared QuerceFit® with regular quercetin and found the phytosome improved the bioavailability of quercetin by 20-fold.1 Quercetin is a polyphenolic flavonoid known to exhibit cellular and immune-moderating activity. Research suggests that quercetin acts as a SIRT1 inducer to promote cellular regulation and autophagy, the natural process of degradation and recycling of cellular components to promote renewal.2, 3 It also increases the body's antioxidant capacity in part by regulating levels of glutathione.4, 5 In a pilot trial involving adults, supplementation for 30 days with 250 mg or 500 mg Quercetin Phytosome™ (QuerceFit®) quercetin phytosome supported antioxidant defenses and helped support respiratory function and nasal comfort.6 Preliminary research suggests that quercetin helps to stabilize mast cells and moderate the release of immune mediators.7-9 ‡
References
- Riva A, et al. Eur J Drug Metab Pharmacokinet. 2019; 44(2): 169–177.
- Nieman DC, et al. Med Sci Sports Exerc. 2010 Feb;42(2):338-45.
- Rezabakhsh A, et al. Phytomedicine. 2019 Mar 15; 56():183-193.
- Xu D, et al. Molecules. 2019 Mar; 24(6): 1123.
- Riva A, et al. Minerva Med. 2018 Aug;109(4):285-289.
- Cesarone MR, et al. Minerva Med. 2019 Dec;110(6):524-529.
- Micek J, et al. Molecules 2016, 21(5), 623
- Weng Z, et al. PLoS One. 2012;7(3):e33805.
- Park HH, et al. Arch Pharm Res. 2008 Oct;31(10):1303-11.
