This study aimed to evaluate the effect of Momordica charantia on fasting blood glucose (FBG), glycated haemoglobin (HbA1c), insulin, homeostatic model of insulin resistance (HOMA-IR), and homeostatic model of β-cell function (HOMA-β) in individuals with prediabetes or T2D. Here, INS is linked to type 2 diabetes mellitus.