Green tea extract: what it is and how much people take
Green tea extract is a concentrated extract of tea leaves. It usually contains caffeine. Many studies exist, but firm conclusions cannot be drawn yet. For adults, the EU limit of under 800 milligrams of EGCG a day is the usual ceiling. Liver injury has been reported, mainly with extract pills; take it with food.
General information, not medical advice. Check with a doctor or pharmacist before taking a supplement, especially if you are pregnant or breastfeeding, take any medicine, or are under 18.
How much people take
| What studies looked at | Many studies exist, but firm conclusions cannot be drawn yet. |
|---|---|
| Daily ceiling | The EU limit of under 800 milligrams of EGCG a day. |
Cautions and interactions
- Liver injury has been reported, mainly with extract pills; take it with food.
- It can lower levels of some medicines, including nadolol and atorvastatin.
Quick answers
- What is green tea extract?
- Green tea extract is a concentrated extract of tea leaves. It usually contains caffeine.
- What has green tea extract been studied for?
- Many studies exist, but firm conclusions cannot be drawn yet.
- How much green tea extract is too much?
- For adults, the EU limit of under 800 milligrams of EGCG a day is the usual ceiling.
- Is green tea extract safe?
- Liver injury has been reported, mainly with extract pills; take it with food. It can lower levels of some medicines, including nadolol and atorvastatin.
Sources
- NCCIH (US National Institutes of Health)
https://www.nccih.nih.gov/health/green-tea
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