Green Tea EGCG
Potent antioxidant from green tea that supports metabolism and weight management.
Also known as: Epigallocatechin gallate • EGCG
Overview
Epigallocatechin gallate (EGCG) is the most abundant and powerful catechin found in green tea. It is a potent antioxidant that has been extensively studied for its role in supporting metabolic health, promoting fat oxidation, and aiding in weight management. EGCG is believed to work by increasing thermogenesis and enhancing the effects of norepinephrine, a key fat-burning hormone.
Key Benefits
Boosts Metabolism
EGCG can increase energy expenditure and promote the body's use of fat for energy, contributing to a higher metabolic rate.
Enhances Fat Oxidation
Studies suggest EGCG inhibits an enzyme that breaks down norepinephrine, leading to higher levels of this hormone which signals fat cells to break down.
Powerful Antioxidant
As a potent antioxidant, EGCG helps protect cells from oxidative stress and damage caused by free radicals, which is often increased during weight loss.
Dosage & How to Take
A typical dose is 400-500 mg of EGCG equivalent per day, usually from a standardized green tea extract.
| Purpose | Dose | Notes |
|---|---|---|
| Weight Management Support | 400-500 mg EGCG | Often split into two daily doses. |
| General Antioxidant Support | 200-300 mg EGCG | Can be taken once daily. |
Best Time to Take
Best taken on an empty stomach to improve absorption. Avoid taking late at night due to potential caffeine content in extracts.
With or Without Food
Can be taken with a light meal to reduce potential for stomach upset.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Standardized Extract | High | Weight management and antioxidant support | Look for extracts standardized for at least 50% EGCG content. |
| Green Tea Beverage | Moderate | General health benefits | EGCG content can vary significantly based on brewing time and tea quality. |
Side Effects & Safety
Common
- Stomach upset
- Insomnia (if extract contains caffeine)
- Headache
Rare
- Dizziness
- Elevated liver enzymes (at very high doses)
Contraindications
- Liver conditions
- Pregnancy and breastfeeding
- Sensitivity to caffeine
Interactions
May increase the risk of bleeding.
Can affect the metabolism of various drugs.
Scientific Research
Efficacy of a green tea extract rich in catechin polyphenols...
Showed a significant reduction in body weight and waist circumference compared to placebo.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.