What is the recommended dosage for Green Tea Extract (EGCG)?

General: 250-500 mg/day EGCG; Via Tea: 3-5 cups/day

What are the side effects of Green Tea Extract (EGCG)?

Potential side effects include: Liver toxicity at high doses (>800 mg EGCG/day), Insomnia (caffeine content), Gastrointestinal discomfort, Iron absorption reduction.

What is Green Tea Extract?

Green tea extract is rich in polyphenols, particularly epigallocatechin gallate (EGCG), and contains L-theanine and small amounts of caffeine. These compounds have been studied for their potential neuroprotective, anti-inflammatory, and cognitive-enhancing effects.

What dosage of Green Tea Extract has been used in cognitive studies?

Cognitive studies have used 250 mg to 500 mg of green tea extract daily, typically standardized to contain 50% or more EGCG. Some studies have used higher doses. Decaffeinated versions are available for those sensitive to caffeine. Consult your healthcare provider.

What are the potential side effects of Green Tea Extract?

Green tea extract is generally safe at moderate doses. High doses of EGCG (above 800 mg) have been associated with liver toxicity in rare cases. Caffeine content may cause insomnia, anxiety, or digestive issues. Consult your healthcare provider, especially if you have liver conditions.

Green Tea Extract (EGCG)
Green Tea Extract (EGCG)

polyphenol

Aussi connu sous le nom de: EGCG, Epigallocatechin Gallate, Camellia sinensis Extract

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About

EGCG (epigallocatechin gallate) crosses the blood-brain barrier, inhibits beta-amyloid aggregation, and provides antioxidant neuroprotection. Epidemiological data strongly associates regular green tea consumption with reduced cognitive decline risk.

How It Works

EGCG crosses the blood-brain barrier; inhibits beta-amyloid aggregation and tau phosphorylation; modulates dopaminergic and serotonergic pathways; enhances alpha brainwave activity.

Evidence For Conditions

Pathologie	Note	Études	Participants
Oxidative Stress & Neuroinflammation	C	10	800	Voir →

Side Effects

Liver toxicity at high doses (>800 mg EGCG/day)
Insomnia (caffeine content)
Gastrointestinal discomfort
Iron absorption reduction

Drug & Supplement Interactions

Iron supplements (tannins reduce absorption)
Nadolol (reduces blood levels)
Blood thinners (mild antiplatelet effect)
MAO inhibitors (caffeine interaction)

Informez toujours votre professionnel de santé de tous les compléments alimentaires que vous prenez.Informez toujours votre professionnel de santé de tous les compléments que vous prenez.

Related Ingredients

Blueberry Extract

En bref

Posologie: General: 250-500 mg/day EGCG; Via_Tea: 3-5 cups/day
Formes: capsule tablet powder tea
Sources naturelles: Green tea, Matcha, White tea
Limite supérieure: 800 mg/day EGCG from supplements (hepatotoxicity risk above)
Meilleur moment: Between meals; avoid on empty stomach

Synthèse des preuves

Oxidative Stress & Neuroinflammation C

Avertissement FDA: Ces déclarations n'ont pas été évaluées par la Food and Drug Administration. Les produits et informations sur ce site ne sont pas destinés à diagnostiquer, traiter, guérir ou prévenir quelque maladie que ce soit. Les notes de preuve présentées sont basées sur notre analyse de la recherche publiée et évaluée par des pairs et ne constituent pas un avis médical. Consultez toujours votre professionnel de santé avant de commencer tout régime de compléments alimentaires.