BioStacks
Dr. Mercola

Quercetin and Pterostilbene Advanced

1 Capsule · 180 servings · $0.48/serving

iHerbAmazon

Best for

Longevity

Ingredients (2)

Quercetin Phytosome Complex

100%

Dose

500 mg

Target

500–1000 mg

Form

—

Trans-Pterostilbene

100%

Dose

50 mg

Target

50–250 mg

Form

—

Other Ingredients (6)

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

Purple CarrotColor

Anthocyanin-rich purple carrot, used as a natural coloring/food ingredient.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

Microcrystalline CelluloseBinder

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

Sunflower LecithinEmulsifier

Non-GMO, non-allergenic emulsifier derived from sunflower seeds

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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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