INS and Hyperglycemia: Epiafzelechin is a type B oligomer propelargonidin [47], and pelargonidin and its glycosides have been demonstrated to possess antidiabetic potential by reducing hyperglycemia and glycation levels as well as stimulating insulin secretion in rodent pancreatic β-cells in vitro [48,49,50], inferring the possible bioactivity of epiafzelechin.