Vendor:Thorne

Quercetin Complex

$54.00

Sku: SB332

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Estimated Delivery 10-14 Days

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Description

Quercetin, one of the two primary ingredients in Thorne's Quercetin Complex, stabilizes the body's mast cells, which store and release histamine.*

Quercetin appears to have many other beneficial effects on human health, including protection of the gastrointestinal tract and the cardiovascular system, where it scavenges free radicals and inhibits oxidation of LDL cholesterol.*

Thorne's Quercetin Complex combines quercetin phytosome (quercetin bound to sunflower-sourced phospholipids, which increases the body's ability to absorb the quercetin) and bromelain, a compound of protein-digesting enzymes derived from the pineapple plant. Bromelain also has immune-enhancing properties because it contains constituents that help maintain a healthy cytokine balance.*

A number of quercetin's positive effects appear to be due to its antioxidant activity. By itself, and paired with vitamin C, quercetin can reduce the incidence of oxidative damage to the skin and nerves caused by the natural depletion of glutathione.*

The advantage of quercetin phytosome is its advanced phytosome technology. Phytosome complexes are created by a patented process that binds a botanical extract to a phospholipid, which are key components of every cell membrane.

Bromelain, which is a mixture of proteolytic (protein-digesting) enzymes from the pineapple plant (Ananas comosus), has been shown to promote healing and reduce temporary and minor swelling and bruising after a visit to the dentist.*

Bromelain exerts some of its positive effects because of its significant proteolytic activity.*

This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants, such as heavy metals, pesticides, and microorganisms.

Suggested Use:

Take 1 capsule three times daily or as recommended by your health-care practitioner.

Warnings:

ALLERGY WARNING

This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.

PREGNANCY

If pregnant, consult your health-care practitioner before using this product.

INTERACTIONS

Because bromelain has fibrinolytic effects that may potentially inhibit blood clotting, Quercetin Complex should be used with caution or avoided in individuals on anticoagulant therapy.

ADDITIONAL WARNINGS

It is not recommended to remove the Quercetin Complex powder from the capsule to take orally, as it can be irritating to the oral mucosa.

FAQs

Frequently asked question

Is Quercetin Complex worth buying for seasonal allergy support?

Yes, Quercetin Complex is a strong choice for allergy support. Quercetin helps stabilize mast cells, which regulate histamine release — a key driver of allergy symptoms. Combined with quercetin phytosome for enhanced absorption, this formula offers better bioavailability than standard quercetin supplements. If you deal with seasonal allergies or histamine sensitivity, this product delivers a science-backed, well-formulated option worth the investment.

What is the return policy if Quercetin Complex doesn't work for me?

We offer a satisfaction guarantee on Quercetin Complex. If you're not happy with your purchase, contact our customer support team within the return window to initiate a return or exchange. We want you to feel confident in your purchase. Check our Returns & Refunds page for full details on eligibility and timeframes before ordering.

What does Quercetin Complex do for the immune system?

Quercetin Complex supports immune health by stabilizing mast cells, which store and release histamine in response to allergens and irritants. It also acts as a powerful antioxidant, scavenging free radicals that can damage cells. This dual action helps the body manage immune responses more effectively while protecting tissues from oxidative stress.

What is quercetin phytosome and why does it matter?

Quercetin phytosome is quercetin bound to sunflower-sourced phospholipids. This binding process significantly improves how well your body absorbs quercetin compared to standard forms. Better absorption means more of the active compound reaches your cells, making the supplement more effective at supporting immune, cardiovascular, and gastrointestinal health.

Can Quercetin Complex support heart and gut health too?

Yes. Beyond immune support, quercetin has shown benefits for cardiovascular and gastrointestinal health. It helps inhibit oxidation of LDL cholesterol and scavenges free radicals that can damage blood vessels. It also offers protective effects on the gastrointestinal tract lining. Quercetin Complex is a multi-benefit supplement, not just an allergy formula.

How long does it take to notice results from Quercetin Complex?

Results vary by individual and health goal. Some people notice improvements in allergy or histamine-related symptoms within a few weeks of consistent use. For cardiovascular or antioxidant benefits, longer-term use is typically needed. Taking Quercetin Complex daily as directed gives you the best chance of experiencing its full range of benefits over time.

Quercetin Complex

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