The green tea drink is loved beverage across the globe and its health benefits have been thoroughly researched. Green tea is made by dry Camellia sinensis leaves. The most widely known feature of this drink is its antioxidant activity that result from the significant levels of polyphenolic compounds, specifically catechins.

The biological effects of green tea for PCOS are mainly attributed to the tea polyphenols, including epigallocatechin-3-gallate (EGCG), epigallocatechin (EGC), epicatechin-3-gallate (ECG), and epicatechin (EC). In all of them, EGCG is the most abundant and bioactive constituent. Studies have demonstrated that the extract of green tea (GTE) is an extremely potent antioxidant is anti-obesity, angiogenesis, anti-cardiovascular, anti-diabetes as well as neuroprotective and anticancer effects.

There are many studies that have examined the possible effects of GTE, a green tea extract (GTE) on the hormone level, metabolic variables and ovarian function in PCOS There isn't a systematic review that summarises the findings of current research. Therefore, the goal of this comprehensive review is to analyze the current information on green tea and identify gaps and possible direction for GTE for PCOS.