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4Optional

Green tea extract

Also sold as EGCG, green tea

Concentrated extracts have caused liver injury — brewed tea has not.

4TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.

How long to take it

Short courses at most.

Who it's actually for

Little justification over simply drinking tea.

Safe upper limit

Unverified
EFSA flags 800 mg EGCG per day from supplements as a liver risk threshold
Concentrated EGCG, particularly on an empty stomach, has caused acute liver failure. Brewing tea is not the same thing.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.

Interactions to know about

  • Liver disease or impairment — Hepatitis, cirrhosis, fatty liver
  • Blood thinners / antiplatelets — Warfarin, apixaban, rivaroxaban, clopidogrel, aspirin
  • Blood pressure medication — Beta blockers, calcium channel blockers, ACE inhibitors
  • Statins — Atorvastatin, simvastatin, rosuvastatin

Other supplements:

Run your full list through the interaction check.

Practical notes

  • Never take on an empty stomach.
  • Reduces iron absorption significantly.
  • Stop for any sign of liver trouble.