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4.8 972,661+ Happy Customers

Support Your Immune Defenses with Quercetin

Immune Support, Seasonal Comfort & Antioxidant Power
Immune Support
Seasonal Comfort
Antioxidant Power
Made in the USA
Third-Party Tested
90-Day Guarantee
Delivered by Aug. 27–29 🇺🇸 Fast US Shipping
Trusted by 972,661+ Americans Made in the USA. Veteran-owned.
90-Day Guarantee

We offer a 90-day money-back guarantee.

If you don't feel the difference, we'll issue a full refund — no questions asked. Simply reach out to our support team.

The Science Behind It

Quercetin is one of the most-studied plant flavonoids — found in trace amounts in onions, apples, and berries, but never at the levels used in research.

It’s best known for supporting a healthy immune response and for its role in seasonal comfort, along with strong antioxidant activity.

Quercetin builds with daily use — most people take it consistently through the seasons that challenge them most.*

How to Take

Take 2 capsules daily with food.

Many customers use it daily year-round for immune support, and appreciate it most during seasonal transitions.*

Shipping & Returns

We offer tracked shipping on all orders, processed within 24 business hours on weekdays.

U.S. orders typically arrive in 3–5 days. Shipping is free on subscriptions and on one-time orders over $50.

Returns are easy. Every order is covered by our 90-day money-back guarantee — email help@lumanutrition.com and we’ll handle everything.

Is It Safe?

Yes — our quercetin is made in FDA-registered, GMP-certified U.S. facilities with no proprietary blends. Every batch is third-party tested for purity and potency by an independent ISO 17025-accredited lab.

Quercetin is generally well-tolerated. If you’re pregnant, nursing, or take medication (especially antibiotics or blood pressure medication), we recommend consulting your healthcare provider before use — just to be safe.

Ingredients

Per 2-capsule serving: Quercetin (500 mg, from Quercetin Dihydrate) and Bromelain (100 mg).

No artificial dyes or preservatives. Made in FDA-registered, GMP-certified U.S. facilities.

3rd-Party Testing

Every batch is tested by an independent ISO 17025-accredited lab — potency, heavy metals, and microbiology. We publish every result. Click here.

Start feeling these benefits in 90 days or less.

Runny-nose seasons, getting run-down easily, wanting your defenses ready before you need them — quercetin is the flavonoid built for exactly that.

Immune support

Supports a healthy, ready immune response year-round.

Seasonal comfort

The reason most customers take it — comfort through challenging seasons.

Antioxidant power

One of nature's most potent flavonoid antioxidants.

Everyday resilience

Daily support for the system that keeps you going.

What real customers are saying.

★★★★★ 4.8 · 330 reviews · verified buyers of this formula

Susan J.
★★★★★

“I have been using well over 6 months. I like how my immune system has improved with allergy conditions.”

Susan J.Quercetin · Verified buyer
Perlin
★★★★★

“I feel so good now that I am taking quercetin”

PerlinQuercetin · Verified buyer
Paul W.
★★★★★

“I take this everyday as part of my normal routine! I highly recommend!!”

Paul W.Quercetin · Verified buyer

Most quercetin is a token sprinkle.

Stop paying for flavonoid amounts food could beat.

Under-dosed

Research on quercetin uses meaningful daily amounts. Many bottles deliver a token dose that an onion could rival.

Hidden blends

Proprietary blends let a brand list an ingredient while telling you nothing about how much is actually inside each capsule.

Untested

Many brands claim third-party tested. Can they prove it? Ask them for a result. We post ours freely. Click here.

We built this bottle to a higher standard. Here’s the proof.

Premium quality for a fair price. The Luma 4-Point Verification checks potency, purity, microbiology and identity confirmation on every batch. We publish the results of all third-party testing.

Why our Quercetin is better.

LumaOthers
Full Daily DoseYesNoDose Stated On LabelYesNoNo Proprietary BlendsYesNoThird-Party TestedYesNoPublished Lab ReportsYesNo
Per daily serving. Others = median across the ten best-selling comparable bottles, Amazon, July 2026.

How long until I see results?

This one builds with consistent daily use rather than hitting all at once. Typical, not guaranteed — which is why the guarantee runs 90 days.

Week 1–2 Building up

Flavonoid levels build with daily use — the groundwork.

Week 2–4 Seasonal comfort

The window where customers report breathing easier through their season.

Week 4+ Steady defense

Consistent use keeps your baseline support in place.

Trusted by world-class medical professionals.

Dr. Kela Smith
Dr. Kela SmithPhD, DNM
Integrative & functional medicine✓Recommends for metabolic support

“What I really love about Luma Nutrition is how dedicated they are to purity, proper dosing, and smart formulation.”

Dr. Blane Schilling
Dr. Blane SchillingM.D.
Sports & regenerative medicine✓Recommends for joint and recovery

“These aren’t just pretty labels. They really deliver. The dosing is where most brands quietly cut corners.”

Dr. Erica Ginsburg
Dr. Erica GinsburgM.D.
Internal medicine✓Recommends for heart health

“Quality ingredients, appropriate dosing, thoughtful formulations. I’m comfortable recommending them to patients.”

These practitioners partner with Luma Nutrition as paid ambassadors, sharing their own opinions and experience.

Jake Langley, founder of Luma Nutrition

I couldn’t find a brand I trusted. So I built one.

It started with a supplement I almost bought for my parents. The label looked impressive. But I couldn’t find any test results, and the dose was a fraction of what the research used.

The Army drilled honor and integrity into me. You don’t cut corners when people are counting on you. The supplement industry cut them everywhere I looked.

So I built Luma to a higher standard: meaningful doses, independent testing on every batch, and verified results anyone can see.

Nothing goes in these bottles that I wouldn’t give my family or take myself. We’ll never ask you to trust a claim we aren’t willing to prove.

Questions? Reach out. I read and answer them.

Jake Langley signature
Jake LangleyFounder · U.S. Army Infantry Officer
Jake’s Deal

Take it for 90 days. If you don't feel the difference, you get your money back.

We refund the whole order, empty bottles included. We stand behind the quality of what we make, and we’re confident enough to put our money where our mouth is.

Jake Langley signature Jake Langley · Founder, U.S. Army Officer
Shop this formula
Jake Langley
90-day money-back guaranteeEmpty bottles included
Made in the USAFDA-registered, NSF GMP
Third-party testedEvery batch, published
Veteran-ownedFounded by a U.S. Army officer

Questions before you order.

How long until I see results?

Many customers take quercetin ahead of and through their challenging seasons — give it two to four weeks of daily use to build up.

How do I take it?

One serving daily. The full serving size is on the label — consistency matters more than timing.

Can I take this with my prescriptions?

Ask your doctor or pharmacist first — quercetin can interact with some antibiotics and blood pressure medications. Call us before you order and we will talk it through.

How is this different from a cheaper version?

Dose. Many bottles deliver token amounts; ours delivers a full daily dose, stated plainly, with a published lab report for every lot.

Is it made in the USA and tested?

Yes — made in FDA-registered, GMP-certified U.S. facilities, and every batch is tested by an independent ISO 17025-accredited lab. We publish every result.

What if it does not work for me?

You get your money back. The whole order, empty bottles included, for 90 days. No forms and no restocking fee.

Real customers, real results.

Verified buyers of this formula, in their own words.

4.8★★★★★330 reviews
5★91%
4★6%
3★2%
2★1%
Read all 330 reviews →
Individual results vary. These statements have not been evaluated by the FDA.