Green tea extract consumption can potentially cause mild adverse reactions, notably nausea, skin conditions, and increased alanine aminotransferase levels.
In our study, we utilized a randomized, double-blind, and placebo-controlled method. We selected 1075 postmenopausal women to participate over the course of one year. They were randomly assigned to daily consumption of green tea extract containing a specified quantity of epigallocatechin gallate (EGCG) or a placebo.
With regards to the results, there was no significant difference observed with general adverse events between those consuming the green tea extract and those taking the placebo. However, it was recognized that those women taking the green tea extract reported a higher incidence of nausea and skin conditions, but a lower occurrence of diarrhea. More women in the green tea extract group experienced an elevation in alanine aminotransferase levels. Overall, adverse events were mainly mild and transient, highlighting a general tolerance for daily consumption of GTE. Yet, it was noted that a small percentage of GTE consumers experienced elevated alanine aminotransferase levels, including a few serious cases.
