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Pure GLP-1 receptor agonists work through four mechanisms: Slowed gastric emptying (the primary satiety signal) Increased insulin secretion in response to glucose Reduced glucagon secretion (glucagon raises blood sugar) Central appetite suppression via hypothalamic GLP-1 receptors The weight loss ceiling for pure GLP-1 agonists appears to be around 15% to 17% of baseline body weight at maximum tolerated dose over 68 weeks (the STEP 1 and STEP 5 trial endpoints for semaglutide 2.4 mg)
Ericzon B., Wilczek H., Larsson M., Wijayatunga P., Stangou A., and Pena J., Liver Transplantation for Hereditary Transthyretin Amyloidosis: After 20 Years Still the Best Therapeutic Alternative?, Transplantation 99 (2015): 18471854
Semaglutide is a glucagon-like peptide-1 receptor agonist (GLP-1 RA) approved by the FDA for the treatment of type 2 diabetes mellitus and chronic weight management
The FDA has warned against using compounded GLP-1 drugs because of dosing errors, questionable ingredients, quality issues and reports of adverse events
