Exenatide drug under brand Byetta is a novel GPL-1 (Glucagon-like Peptide-1) incretin mimetic hormone that has been FDA approved for use in poorly managed Type 2 diabetes individuals using sulfonylureas and metformin pills. Glucagon-like Peptide-1 is secreted from enteroendocrine cells located in the ileum and colon in response to a meal. People with Type 2 sugar diabetes and impaired glucose tolerance are GPL-1 (glucagon-like Peptide-1) deficient. When given before a meal, exenatide (Byetta) restores first-phase insulin response in people with Type 2 diabetes. Exenatide reduces postprandial glucagon levels and increases insulin release from the beta cells. Exenatide (Byetta) injections improve gastric emptying and promotes satiety. It is noted that Byetta (exenatide) appears to reduce beta-cell death (apoptosis). Exenatide (Byetta) functions in a glucose-dependent fashion which means that the effects of the exenatide drug are obvious mainly in the presence of hyperglycemia. You can buy exenatide drug Byetta online now from various vendors following selected links to the right.