BioStacks
Thorne

Quercetin Phytosome

1 Capsule × 2/day · 60 servings · $0.63/serving

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Best for

Longevity

Ingredients (3)

Quercetin Phytosome Complex

100%

Dose/day

500 mg

Target

500–1000 mg

Form

—

Phospholipids

Amount not found

Sophora Japonica Extract

Amount not found

Other Ingredients (4)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

HypromelloseCapsule

Plant-derived capsule material from cellulose

LeucineFlow Aid

Branched-chain amino acid used as a processing aid

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

How to Take It

Take it anytime

Poorly absorbed on its own — take with a fat-containing meal.

With a meal containing fat
Split into 2 doses across the day

On the label

Take 1 capsule two to three times daily with meals or as recommended by your health professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$38.00

$20$50$100

Pricier than 70% of 68 quercetin supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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