Quercetin Phytosome #60
Accurate retail: $27.63
Thorne.com retail: $32.50
Quercetin bound to sunflower-sourced phosphatidylcholine to enhance absorption*
Helps stabilize mast cells that store and release histamine*
Provides support for patients who suffer from allergies*
An antioxidant flavonoid*
One Capsule Contains:
Quercetin Phytosome (Sophora japonica concentrate (leaf) / Phosphatidylcholine complex from Sunflower) 250 mg
Other Ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Leucine, Silicon Dioxide.
Widely distributed in the plant kingdom, quercetin is the most abundant of the flavonoid molecules. It is found in many foods, including apples, onions, teas, berries, vegetables of the cabbage family, seeds, and nuts.
The crucial advantage that is attributable to Quercetin Phytosome is its advanced phytosome technology. Phytosome complexes are created by a patented process that binds a botanical extract to phosphatidylcholine, a key component of cell membranes. In the case of Quercetin Phytosome, quercetin is combined with sunflower-sourced phosphatidylcholine to create a phytosome complex that easily crosses the gut barrier.*
Quercetin has many beneficial effects on human health. Probably its most well-known mechanism of action involves stabilization of mast cell membranes, which helps to decrease the release of histamine.* Other benefits include cardiovascular support and protection of the gastrointestinal tract.* A number of quercetin’s beneficial effects appear to be due to its antioxidant activity.* Quercetin scavenges free radicals and inhibits the oxidation of LDL cholesterol.* By itself, and when paired with vitamin C, quercetin reduces the incidence of oxidative damage to skin and nerves caused by glutathione depletion.*
Drug Interactions with Quercetin
While the clinical significance has not yet been established, Quercetin has been shown to inhibit P-gp, a transporter that affects blood levels and central nervous system levels of certain drugs. As a result of this inhibition, it may be possible that Quercetin can decrease blood levels but at the same time increase central nervous levels of fentanyl, morphine, methadone and possibly oxycodone. This could result in either increased or decreased therapeutic effect and/or side effects. When taking Quercetin while also taking these medications, caution should be emphasized by monitoring for changes in responsiveness to the medications and it may be necessary to reduce the dose of these medications to avoid side effects.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Quercetin – Overviews
Quercetin – COMT inhibitor
Quercetin – Drug Interactions
- Overview of P-glycoprotein inhibitors – a rational outlook – 2012
- Emerging Significance of Flavonoids as P-Glycoprotein Inhibitors in Cancer Chemotherapy – 2009
- Herbal modulation of P-glycoprotein. [Drug Metab Rev. 2004] – PubMed – NCBI
Quercitin – Green tea
Quercetin – Liver Disease
Quercetin – Nanoformulations
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