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THORNE - Quercetin Phytosome - Exclusive Phytosome Complex for Immune Health, Respiratory Support & Seasonal Allergy Relief* - 60 Servings

THORNE - Quercetin Phytosome - Exclusive Phytosome Complex for Immune Health, Respiratory Support & Seasonal Allergy Relief* - 60 Servings

Q: How is this different then general quercetin?

Thorne's Quercetin Phytosome utilizes the advanced technology of phytosome complexes. Phytosome complexes are created by a patented process that binds a designated botanical extract to a phospholipid. Phospholipids are readily absorbed key components of cell membranes, and when complexed with a botanical, the phospholipid increases the absorbability of the botanical to which it is combined. In Thorne’s Quercetin Phytosome, quercetin is combined with plant-based phospholipids to create a phytosome complex that significantly enhances the absorption of the quercetin through the cell membrane, compared to quercetin by itself.

Q: What is the standardized quercetin phytosome content of thorne quercetin phytosome from flower extract?

I emailed Thorne and this was their reply: It is approximately 40% quercetin, so the product contains approximately 100mg of quercetin. Quercetin phytosome demonstrates 20x absorption vs standard quercetin in clinical studies.

Q: Is the L-leucine derived from corn? Is this product free of corn?

The leucine is derived from duck feathers, which are not pulled from the ducks but collected as they fall out. None of Thorne’s finished products contain corn, however, occasionally a product might contain an ingredient derived from corn. These are purified and considered non-allergenic. The quercetin in Thorne's Quercetin Phytosome supplement is derived from Saphora japonica, which is a plant. The phospholipid complex is derived from sunflower.

Q: What Color is the powder suppose to be?

The powder in the capsules of Thorne’s Quercetin Phytosome can vary in color from pale yellow to orange, and can sometimes have a speckled or slightly mottled appearance.

Product ID: 63589915

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🌿Sophora japonica flavonoid power

🔬Third-party tested purity

🛡️20x bioavailability boost

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Description

🛡️ Elevate your immune game with nature’s most bioavailable defense!

IMMUNE ARMOR ALL YEAR - Supports balanced immune function and respiratory health through seasonal shifts
PLANT POWERED POTENCY - Harnesses a potent flavonoid from Sophora japonica in a phytosome complex for superior absorption
CLEAN ALLERGY FRIENDLY - Formulated free from peanuts, soy, dairy, nuts, fish, and shellfish for peace of mind
CLINICALLY TRUSTED BRAND - Preferred by 100+ pro sports teams and top healthcare practitioners nationwide
OXIDATIVE STRESS DEFENSE - Neutralizes free radicals to protect cells and slow aging

THORNE Quercetin Phytosome delivers a clinically trusted, highly bioavailable flavonoid complex extracted from Sophora japonica flowers, designed to support immune function, respiratory health, and seasonal allergy relief. With 20 times greater absorption than standard quercetin, third-party certification, and a clean allergen-free formula, it’s the go-to choice for professionals seeking year-round wellness and oxidative stress protection.

Specifications

Allergen Information	Peanut Free, Egg Free, Soy Free, Dairy Free, Tree Nut Free, Fish Free, Shellfish Free
Item Weight	2.08 ounces
Item Dimensions	2.09 x 2.09 x 3.72 inches
Unit Count	60.0 Count

Have a Question? See What Others Asked

How is this different then general quercetin?

What is the standardized quercetin phytosome content of thorne quercetin phytosome from flower extract?

Is the L-leucine derived from corn? Is this product free of corn?

What Color is the powder suppose to be?

Reviews

D**R

Another Quality product as with nearly all Thorne products

Another Quality product as with nearly all Thorne products!I trust Thorne for great research, excellent quality ingredients and a fair price for supplements that actually have proven health benefits.

14.09.2025

M**R

Detox

Exelente Quercetina para limpiar el cuerpo de celulas que no son buenas y mas. Detox!!

11.09.2025

K**Z

Meds

They work!

18.08.2025

K**N

Works Great!!

Works great!!

19.06.2025

L**A

Makes feel good, healthy and not jittery kind of feeling..

I don’t know what it does but I feel very good almost immediately after I take it and the good feeling last a while. Initially 2 capsules at once then just one daily for maintenance.

17.03.2025

A**R

Remedio para la alergia

Todavia estoy investigando como me funcionan. Necesito por lo menos tomarme la mitad de las pastillas para poder determinar su eficacia. Hasta ahora parecen ser efectivas.

16.08.2022

T**.

Recommended by my Doctor

I recently had a big flare up with my prostate. Almost waited too long to go to the doctor, and was very sick for several weeks.Once he got me headed in the right direction, he recommended that I stay on this.

1.11.2024

S**H

Thorne Quercetin Phytosome

Great product as all Thorne products . I fewl it helps me not get as sick . Do your research as we get into winter for what I refer to. Fast delivery Highly recommend product & vendor Thank you

18.11.2024

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