What Is Quercetin Phytosome? Benefits, Differentiators & More

mbg Associate Editor By Jamie Schneider
mbg Associate Editor
Jamie Schneider is the Associate Editor at mindbodygreen, covering beauty and health. She has a B.A. in Organizational Studies and English from the University of Michigan, and her work has appeared in Coveteur, The Chill Times, and Wyld Skincare.
Expert review by Ashley Jordan Ferira, Ph.D., R.D.N.
mbg Director of Scientific Affairs
Ashley Jordan Ferira, Ph.D., R.D.N. is Director of Scientific Affairs at mindbodygreen. She received her bachelor's degree in Biological Basis of Behavior from the University of Pennsylvania and Ph.D. in Foods and Nutrition from the University of Georgia.
The Supplement Health And Well-Being Experts Recommend To Support Healthy Digestion

When it comes to supporting immunity and overall well-being, a few nutrients deserve honorable mention. You, of course, have your old-school, well-known vitamins and minerals (vitamins C, D, and zinc, for example), but you also have relatively new powerhouse players on the scene, like quercetin.* 

Quercetin, as you may know, is a bioactive plant compound found in many healthy foods (apples, onions, and tea, to name a few), but if you're planning on supplementing with the potent immunomodulator to receive a more concentrated dose, there's something you should know: Form does matter. Specifically, a form called "quercetin phytosome" reigns supreme.*

What is quercetin phytosome? 

A little refresher, just in case: Quercetin is a potent flavonoid (type of phytonutrient) found in a bunch of fruits, vegetables, nuts, and grains (here's our master list of quercetin-rich foods). In a high-quality supplement form, though, it's often derived from the dried flowers and buds of the Sophora japonica (or Japanese pagoda) tree. Read all about the plant-based powerhouse here.

As for the "phytosome" bit, the term simply translates to phyto (meaning "plant") and liposome (meaning "tiny lipid or fat particles" used as an effective method of nutraceutical and nutrient delivery; they're typically derived from lecithin phospholipids sourced from common fats like sunflower oil). 

"[The] liposome is a bioavailability technology or tool to help chauffeur, if you will, an active (in this case, quercetin) into the body via the gut and into your cells to be used," mbg director of scientific affairs Ashley Jordan Ferira, Ph.D., RDN, explains on the mindbodygreen podcast.

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How is it different?

Put simply: In supplement form, quercetin phytosome is superior for absorption and utilization in the body compared to regular ol' quercetin. "On its own, [quercetin] is poorly absorbed and not very bioavailable," Ferira adds. 

Whereas quercetin phytosome is able to penetrate the cell membrane bilayer by strategically featuring hydrophilic (or water-loving) heads and hydrophobic (or water-resisting) tails—that way, the liposome-insulated bioactive (quercetin, in this case) can effectively shimmy its way inside. "Those heads are on the outside, and the tails are on the inside," Ferira continues. "[The cell] enrobes the quercetin molecule, ushering it into the gut for ease of absorption. And that is how [you] ensure that you're getting this potent powerhouse antioxidant."

Benefits of quercetin phytosome. 

Now that we know quercetin phytosome is the most innovative and best way to get this phytonutrient chauffeured into your gut, let's discuss what it does once it arrives: 

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1. Provides antioxidant and anti-inflammatory properties.* 

Quercetin is a flavonoid, a supercharged class of antioxidants—which means it can help neutralize free radicals in the body to support a tempered inflammatory response.* In fact, one study published in the European Journal of Clinical Nutrition found that supplementing with quercetin helped lower levels of the inflammatory biomarker C-reactive protein (CRP).* "It's helping to bolster your antioxidant defenses on a daily basis," notes Ferira.*

2. Promotes immune resilience.* 

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Daily immunity shield to strengthen your body’s natural defenses, featuring quercetin phyotosome.*

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Quercetin contributes to immune resilience through a few different paths.* First, its powerhouse antioxidant actions, plus it also has antiviral and anti-inflammatory properties to support the natural immune response.* Perhaps that's why Heather Moday, M.D., dubs it a "no-brainer for immune support."* 

"Not to mention, quercetin acts as a zinc shuttle, getting zinc into cells," says Vincent Pedre, M.D., board-certified internist. Zinc is involved in the development and protection of immune cells in the innate and adaptive immune systems.* Meaning, not only can it support a balanced immune response itself—but quercetin can also help usher in other nutrients critical for immune function.*

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3. Provides respiratory and sinus health support.*

Quercetin has the unique ability to help block histamine release, the main trigger for respiratory and sinus health issues. That's why, experts say, it's a popular phytonutrient for promoting respiratory health and sinus comfort.*

4. Supports heart health.* 

Quercetin also has some cardiovascular benefits: One meta‐analysis of randomized controlled trials found that supplementing with the plant powerhouse could help stabilize blood pressure.*

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5. Nurtures cognitive health.* 

Due to its anti-inflammatory and antioxidant properties, quercetin can support cognitive performance, research has found.* Specifically, quercetin supports mitochondrial biogenesis (or the production of new mitochondria) in the brain, promoting cognitive health and function.* 

6. Supports healthy aging and longevity.* 

Given quercetin's effects on mitochondrial biogenesis, the phytonutrient can also support longevity as well.* Your mitochondria, if you remember from grade school, are the "powerhouse of the cell," which means they supply energy to every single cell in your body—and experts say that tending to mitochondrial health is a great way to support healthy aging.*

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The takeaway. 

Quercetin is one impressive plant bioactive. If you're planning to supplement with this phytonutrient, perhaps elect for quercetin phytosome to make sure you're absorbing it most effectively (so your body can use it best).*

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