# Teavigo (Epigallocatechin gallate)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/teavigo
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-31
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** EGCG, Epigallocatechin-3-gallate, Green tea catechin, Purified green tea extract, Standardized EGCG extract, Camellia sinensis extract, Decaffeinated green tea polyphenol

## Overview

Teavigo is a standardized extract of epigallocatechin gallate (EGCG), the primary bioactive catechin found in green tea. It works by modulating cellular [antioxidant](/ingredients/condition/antioxidant) pathways and lipid [metabolism](/ingredients/condition/weight-management) through inhibition of fatty acid synthase and activation of AMP-activated protein kinase.

## Health Benefits

• Weight management support - Preclinical evidence shows prevention and regression of diet-induced obesity through lipid [metabolism](/ingredients/condition/weight-management) regulation in adipose tissue
• [Antioxidant](/ingredients/condition/antioxidant) cellular protection - EGCG acts as a potent antioxidant protecting cells from oxidative damage
• [Cardiovascular health](/ingredients/condition/heart-health) support - Contributes to heart health through polyphenol activity (mechanism-based evidence)
• Anti-parasitic activity - Inhibits hexose uptake in infected cells by binding adhesion molecules, impairing parasite [energy production](/ingredients/condition/energy)
• Cancer cell growth inhibition - Induces apoptosis in cancer cell lines like HT29 colorectal cells, with synergistic effects when combined with epicatechin

## Mechanism of Action

EGCG inhibits fatty acid synthase (FAS) enzyme activity, reducing lipogenesis in adipose tissue while activating AMP-activated protein kinase (AMPK) to enhance [fat oxidation](/ingredients/condition/weight-management). The compound's polyphenolic structure provides antioxidant protection by scavenging [reactive oxygen species](/ingredients/condition/antioxidant) and chelating metal ions. EGCG also modulates nitric oxide synthase activity and inhibits angiotensin-converting enzyme (ACE) to support [cardiovascular](/ingredients/condition/heart-health) function.

## Clinical Summary

Preclinical studies demonstrate EGCG's ability to prevent and reverse diet-induced obesity through metabolic regulation in adipose tissue. Human trials with green tea extracts containing 200-400mg EGCG show modest weight loss effects of 2-4 pounds over 8-12 weeks. [Antioxidant](/ingredients/condition/antioxidant) benefits are well-documented in cell culture and animal studies, though human clinical data remains limited. Cardiovascular benefits are primarily supported by observational studies and short-term intervention trials showing improvements in [endothelial function](/ingredients/condition/heart-health).

## Nutritional Profile

Teavigo is a highly purified EGCG (Epigallocatechin gallate) extract standardized to ≥94% EGCG content, derived from green tea (Camellia sinensis). As a concentrated polyphenol isolate, it contains negligible macronutrients (carbohydrates, fats, proteins) at typical supplemental doses. Primary bioactive compound: EGCG (a catechin-class flavan-3-ol) at ≥94% purity per DSM specification, with trace amounts of other green tea catechins including EGC (epigallocatechin), ECG (epicatechin gallate), and EC (epicatechin) comprising the remaining ~6%. Typical supplemental doses range from 100–400 mg EGCG per serving. No meaningful vitamin, mineral, or fiber content is present at these doses. Bioavailability notes: EGCG has inherently limited oral bioavailability (~1–5% absorption in humans) due to poor [intestinal permeability](/ingredients/condition/gut-health), rapid phase II [metabolism](/ingredients/condition/weight-management) (glucuronidation, sulfation, methylation), and degradation at intestinal pH. Peak plasma concentrations (Cmax) following a 400 mg dose are approximately 0.5–1.0 µmol/L. Absorption is enhanced in a fasted state; food co-ingestion can reduce Cmax by up to 60%. The gallate moiety on EGCG contributes to its potent [antioxidant activity](/ingredients/condition/antioxidant) but also limits transport across epithelial membranes. No significant caloric contribution at standard doses (<5 kcal per serving).

## Dosage & Preparation

Products typically deliver 150 mg Teavigo per serving (yielding approximately 141 mg EGCG at 94% standardization). Animal studies used obesity-preventing doses, but specific human dosage ranges are not established in the research. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

EGCG supplements are generally well-tolerated at doses up to 800mg daily, though higher doses may cause nausea, stomach upset, or headaches. The compound can enhance the effects of blood-thinning medications like warfarin and may reduce iron absorption when taken with meals. Liver toxicity has been reported with very high doses (1000mg+) of concentrated EGCG supplements, particularly on empty stomach. Pregnant and breastfeeding women should avoid high-dose EGCG supplements due to insufficient safety data.

## Scientific Research

The primary evidence comes from a preclinical study in C57BL/6J mice and Sprague-Dawley rats demonstrating obesity prevention through Teavigo supplementation, with gene expression analysis confirming lipid [metabolism](/ingredients/condition/weight-management) regulation (PMID: 15735368). No human randomized controlled trials specifically using the Teavigo brand were identified in the available research.

## Historical & Cultural Context

EGCG derives from green tea (Camellia sinensis), used for centuries in Traditional Chinese Medicine for [antioxidant](/ingredients/condition/antioxidant), digestive, and vitality benefits. However, Teavigo itself is a modern branded extract without historical precedent.

## Synergistic Combinations

Epicatechin, Vitamin C, Quercetin, Piperine, Omega-3 fatty acids

## Frequently Asked Questions

### What is the recommended dosage of Teavigo EGCG?

Clinical studies typically use 200-400mg of EGCG daily, divided into 2-3 doses. Teavigo supplements commonly provide 94% pure EGCG, requiring smaller doses than standard green tea extracts.

### How long does it take to see benefits from Teavigo?

Antioxidant effects may occur within hours, while metabolic benefits like weight management typically require 8-12 weeks of consistent supplementation. Individual response varies based on diet, exercise, and baseline health status.

### Can I take Teavigo with caffeine or coffee?

Yes, Teavigo is caffeine-free and can be safely combined with coffee. However, taking EGCG with caffeine may enhance fat oxidation effects but could also increase potential for stomach irritation.

### Is Teavigo better than drinking green tea?

Teavigo provides concentrated EGCG without caffeine, tannins, or other compounds that may cause side effects. One Teavigo capsule typically contains EGCG equivalent to 10-15 cups of green tea.

### Should Teavigo be taken with or without food?

Taking Teavigo with food reduces stomach irritation and improves tolerance, though absorption may be slightly decreased. Empty stomach dosing increases bioavailability but may cause nausea in sensitive individuals.

### Does Teavigo EGCG interact with blood pressure medications or heart medications?

Teavigo contains EGCG, a polyphenol that supports cardiovascular health, but it may have mild effects on blood pressure and could potentially interact with certain antihypertensive or cardiac medications. If you take blood pressure medications, heart medications, or anticoagulants, consult your healthcare provider before starting Teavigo to ensure safety and appropriate dosing. Your doctor may need to monitor blood pressure or adjust medication as needed.

### Is Teavigo safe during pregnancy and breastfeeding?

While EGCG from green tea is naturally consumed during pregnancy in some cultures, high-dose Teavigo supplementation during pregnancy and breastfeeding has not been extensively studied for safety. It is recommended to consult with your obstetrician or healthcare provider before using Teavigo during pregnancy or while nursing to determine if it is appropriate for your individual circumstances.

### What is the bioavailability difference between Teavigo and regular EGCG supplements?

Teavigo is a branded, standardized extract of green tea catechins with high EGCG concentration (typically 90%+ purity), which may offer superior bioavailability and consistency compared to non-standardized EGCG products. The standardization and processing of Teavigo helps ensure reliable potency and absorption, whereas generic EGCG supplements may vary significantly in quality and effective delivery. This makes Teavigo a more predictable option for consistent supplementation benefits.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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