Used in research for its antioxidant properties, Isotheaflavin shows potential in supporting cellular health by reducing oxidative stress. It is studied for possible roles in promoting cardiovascular wellness and modulating inflammatory pathways. Due to its structural similarity to other tea polyphenols, it is also explored for use in nutraceuticals and functional foods aimed at enhancing metabolic health. Additionally, it serves as a reference compound in analytical studies of tea-derived flavonoids.