What should you know about Matcha and green tea uses, forms, evidence and safety?
Matcha, brewed green tea and concentrated green-tea extracts create different exposures and should not share one evidence or safety claim.

The short answer
The exact identity, preparation and amount determine how information about Matcha and green tea applies. Traditional context and practitioner experience are presented separately from modern research. Green tea contains caffeine. Concentrated extracts can cause gastrointestinal effects, raise blood pressure and, uncommonly, have been associated with liver injury. Green tea can interact with medicines including nadolol and atorvastatin. Review caffeine during pregnancy and breastfeeding.
Sources
- Green Tea: Usefulness and SafetyNational Center for Complementary and Integrative Health