BioStacks
Thorne

Quercetin Phytosome

1 Capsule · 60 servings · $0.63/serving

19 / 100Very Poor

Best for

Score Breakdown

Formulation
19
Safety
100
Final score
19/100

Ingredients (3)

Quercetin Phytosome Complex

50%

Dose

250 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

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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.