Cymbopogon proximus (C. proximus) is a wild herbaceous plant utilized as a potent remedy in Egyptian folk medicine, sometimes referred to as “Halfabar.” This study examined the hypoglycemic, hypolipidemic, and antioxidant properties of the methanolic extract from the aerial parts of C. proximus, as well as its impact on pancreatic tumour necrosis factor-α (TNF-α) and Glucose Transporter-4 (GLUT4) in skeletal muscles within an experimental model of insulin resistance. This evidence concerns the gene TNF and Insulin resistance.