Epigallocatechin-3-gallate (EGCG) is the main polyphenol in green tea, known for its antioxidant, anti-inflammatory, and neuroprotective properties. It acts by scavenging reactive oxygen species and modulating signaling pathways involved in inflammation and neuronal survival. EGCG has been studied as a neuroprotectant in various neurological diseases.
Glatiramer acetate is an immunomodulatory drug approved for the treatment of relapsing forms of multiple sclerosis (MS). It consists of synthetic polypeptides that mimic myelin basic protein and modulate immune responses by shifting T-cell populations from pro-inflammatory to anti-inflammatory phenotypes.
The combination has been investigated primarily for multiple sclerosis. Preclinical studies suggest synergistic effects on neuroprotection and immunomodulation—combining EGCG’s neuroregenerative actions with glatiramer acetate’s immune-modifying properties. However, clinical trials have not demonstrated significant additional benefit over standard therapy with glatiramer acetate alone in MS patients.