BioStacks
Life Extension

Fast-C and Bio-Quercetin Phytosome

1 Tablet · 60 servings · $0.28/serving

38 / 100Poor

Best for

Score Breakdown

Formulation
44
Safety
87
Final score
38/100

Ingredients (7)

4 scored · 3 not scored

Vitamin CSynergy500 mg

Within effective range · Budget form

Bioperine Piperine3 mg

60% of effective dose

Bio-Quercetin Phytosome15 mg

3% of effective dose

Quercetin5 mg

1% of effective dose

Calcium79 mg

Trace amount — not scored

Other Ingredients

Fillers, coatings, and additives

7Safe1Caution

MaltodextrinBinder

Caution

Silicon DioxideAnti-caking

Safe

Vegetable StearateLubricant

Safe

Croscarmellose SodiumDisintegrant

Safe

GlycerinHumectant

Safe

HypromelloseCapsule

Safe

Microcrystalline CelluloseBinder

Safe

Stearic AcidLubricant

Safe

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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.