Herbs & botanicals
Green Tea
Names you may see: camellia sinensis catechins EGCG
The quick take
Green tea contains catechins, including EGCG, and can contain caffeine. Concentrated extracts differ from brewed tea.
A closer look
What forms will I see on a label?
Compare the extract amount, catechin or EGCG content, and caffeine content. Decaffeinated does not mean the extract is risk-free.
Why people use it
Extracts are marketed for weight management and increased calorie burning, sometimes alongside caffeine.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Weight-management effects are generally small and inconsistent. Findings about drinking tea do not automatically apply to concentrated supplements.
What should I know before using it?
Concentrated green-tea extracts have been associated with liver injury. Follow label directions and review use with a professional if you have liver concerns.
Sources & further reading
NIH Office of Dietary Supplements ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.