Independent supplement research
Green Tea Extract: Evidence, Side Effects & Liver Safety
Green tea as a beverage and concentrated green tea extracts are not interchangeable from a safety perspective.
Weight-loss expectations
The NIH Office of Dietary Supplements describes the possible effect of green tea on body weight as modest. That is very different from promising dramatic or automatic fat loss.
Extract safety
NCCIH lists nausea, constipation, abdominal discomfort and increased blood pressure among side effects of green tea extract. It also notes uncommon reports of liver injury, primarily with extracts in tablets or capsules.
Interactions matter
NCCIH identifies interactions with medicines including nadolol, atorvastatin and raloxifene and advises people taking medicines to discuss herbal supplements with a health care provider.
Why this belongs in the ResveraBurn cluster
Any liver-focused supplement containing green-tea-derived material deserves careful label review rather than assuming “natural” means risk-free. See our ResveraBurn safety guide.