Despite the widespread use of G protein-coupled receptor (GPCR)-targeted drugs in cardiovascular diseases, such as those targeting β-Adrenergic receptors (βARs), angiotensin II type 1 receptors (AT1Rs), and glucagon-like peptide-1 (GLP-1) receptors [32, 45], only specific types of GPCRs, including β2-adrenergic receptors, opioid receptors, and adenosine receptors, have been identified to exert cardiomyocyte protective functions against ischemic stress [21, 46, 47]. Here, GCG is linked to cardiovascular disorder.