Metabolic Measure
EGCG & Green Tea: Weight-Management Evidence
Green tea contains catechins including EGCG, and it is one of the more frequently studied ingredients in weight-management supplements.
Research on green tea extracts does not automatically establish that a multi-ingredient product containing EGCG will produce the same outcome. Effect size, dose, caffeine content and study population all matter.
For a broad evidence overview, see the NIH ODS weight-loss supplement fact sheet.