BioStacks
Life Extension

Theaflavin

1 Capsule · 30 servings · $0.45/serving

41 / 100Average

Score Breakdown

Formulation
41
Safety
100
Final score
41/100

Ingredients (1)

Black Tea extract

100%

Dose

350 mg

Target

200–1000 mg

Form

Other Ingredients (3)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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.