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Types of Green Tea Extract (EGCG): Forms & Bioavailability

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Standardized EGCG ExtractModerateConcentrated catechins without excessive caffeine
Green Tea Extract (with caffeine)ModerateSynergistic formula — caffeine enhances EGCG thermogenic effects
Decaffeinated Green Tea ExtractModerateCaffeine-sensitive individuals — still provides EGCG benefits

Standardized EGCG Extract

Bioavailability: Moderate. Best for: Concentrated catechins without excessive caffeine.

Green Tea Extract (with caffeine)

Bioavailability: Moderate. Best for: Synergistic formula — caffeine enhances EGCG thermogenic effects.

Decaffeinated Green Tea Extract

Bioavailability: Moderate. Best for: Caffeine-sensitive individuals — still provides EGCG benefits.

Full Green Tea Extract (EGCG) Guide

References

  1. Meta-analysisJurgens TM, Whelan AM, Killian L, et al. (2012). Green tea for weight loss and weight maintenance in overweight or obese adults. Cochrane Database of Systematic Reviews. DOI PubMed
  2. RCTDulloo AG, Duret C, Rohrer D, et al. (1999). Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans. American Journal of Clinical Nutrition. DOI PubMed
  3. RCTLoftis JM, Wilhelm CJ, Huckans M (2013). Effect of epigallocatechin gallate supplementation in schizophrenia and bipolar disorder: an 8-week, randomized, double-blind, placebo-controlled study.. Therapeutic advances in psychopharmacology. DOI PubMed