Exendin-4 differs from human GLP-1 by about 50% of its amino acids, importantly having a glycine instead of alanine at the N-terminus (making it DPP-4 resistant) ( [46] )
Many patients experience uncomfortable side effects such as persistent nausea, vomiting, and diarrhea, which can severely disrupt daily life
Aggregated peptide fragments can trigger injection site reactions that the native peptide does not cause
These practical adjustments improve image quality without extending scan time
This has made the drug buzzy not just among people looking to lose a few (or few dozen) pounds, but with athletes, weightlifters, and body composition obsessives
These effects suggest potential improvements in muscle quality and composition, which may be particularly relevant for older adults at risk of muscle loss, although studies specifically focused on this population remain limited