GCG and type 2 diabetes mellitus: However, there is not much evidence regarding its effects on blood pressure, and the acute administration of GLP-1 in patients with type 2 diabetes did not change systolic or diastolic blood pressure in the radial artery or renal vein compared to controls [8]. In a similar experiment, exogenous GLP-1 administered to patients with type 2 diabetes and individuals with normal glucose tolerance resulted in attenuation in the typical postprandial fall in blood pressure that occurs in these patient populations.