Mechanism of Action

Semaglutide operates as a glucagon-like peptide-1 (GLP-1) receptor agonist, meaning it mimics the action of the naturally occurring hormone GLP-1 within the body. GLP-1 plays a crucial role in regulating appetite and food intake by signaling to the brain to reduce hunger and increase feelings of fullness after eating. By activating GLP-1 receptors, Semaglutide helps promote weight loss to by decreasing appetite, slowing gastric emptying, and enhancing insulin sensitivity, thereby reducing overall calorie intake and improving blood sugar control.
On the other hand, Tirzepatide takes a dual approach by acting as both a glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptor agonist. GIP is another hormone involved in glucose and insulin regulation, and by activating GIP receptors alongside GLP-1 receptors, Tirzepatide works synergistically to control blood sugar levels and appetite. This dual mechanism of action allows Tirzepatide to target multiple pathways involved in weight regulation, offering potentially enhanced efficacy compared to medications that target only one of these pathways. Additionally, Tirzepatide’s ability to stimulate both GIP and GLP-1 receptors may provide additional benefits in terms of glucose metabolism and insulin sensitivity, making it a promising option for individuals with type 2 diabetes or those at risk of developing the condition.