Green Tea Extract
Morning
Green tea extract is a concentrated source of polyphenols derived from the leaves of Camellia sinensis, with EGCG (epigallocatechin gallate) being its most pharmacologically active catechin. Used for centuries in East Asian medicine, it has become one of the most extensively researched plant-based supplements, valued for its broad effects on metabolism, cardiovascular function, and cognitive performance.
Research Evidence
May reduce risk of certain neurodegenerative conditions
LimitedSupports cognitive function and sustained attention
ModerateIncreases fat oxidation and energy expenditure
StrongMildly suppresses appetite and enhances satiety
ModerateReduces LDL cholesterol and improves lipid profiles
StrongProvides systemic antioxidant protection
StrongExpert Evidence
20 references from 5 experts
Safety & Cautions
Side Effects
- Nausea on an empty stomach
- Liver enzyme elevation at very high doses
- Insomnia if taken late due to caffeine content
- Mild digestive discomfort
Green tea extract is generally well-tolerated at standard doses taken with food, but high-dose supplementation on an empty stomach has been linked to rare cases of hepatotoxicity. Individuals with liver conditions or those taking hepatotoxic medications should consult a physician before use.
Pairs Well With