Green Tea Extract
A plant extract standardised for catechins, marketed to support metabolic activity.
Last reviewed 19 Sept 2026
What is it?
Green tea extract is derived from Camellia sinensis leaves and is often standardised for catechins such as EGCG.
Why is it used?
It is included in some weight-management supplements, marketed to help support metabolic activity.
How does it work?
Catechins and naturally occurring caffeine are suggested to contribute to energy expenditure, though effects are modest.
Common uses
- Weight-management formulas
- Antioxidant-focused products
What does research suggest?
Research suggests any effect on energy expenditure is modest. It is not a substitute for diet and activity. Individual results vary.
Potential benefits
- Contains catechins
- Commonly studied
- May complement a broader routine
Limitations
- Effects are modest
- Contains caffeine
- Not a weight-loss solution on its own
Safety considerations
Concentrated extracts have been associated with rare liver concerns. Stick to labelled doses and consult a healthcare professional before use, especially with existing conditions.
Who should be cautious?
- People with liver conditions
- Those sensitive to caffeine
- Anyone on certain medications
Common supplement forms
- Capsules
- Standardised extracts
Frequently asked questions
Will green tea extract help me lose weight?
Any effect is modest. It may complement — not replace — a calorie-appropriate diet and active lifestyle. Individual results vary.
Medical Disclaimer
This content is for general educational purposes only and is not personalised medical advice. Always consult a qualified healthcare professional before making changes to your diet, training or supplement use.
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