Longer-term use (6+ months) may create more durable improvements where enhanced dermal architecture supports ongoing collagen synthesis at rates intermediate between treatment peaks and pre-treatment baseline, potentially maintaining 40-60% of peak improvements indefinitely without continuous peptide application
Several natural compounds demonstrate DPP-4 inhibitory activity, though far weaker than pharmaceutical inhibitors
The FDA started cracking down on peptides in 2024 and 2025, sending warning letters to dozens of clinics, pharmacies, and websiteseven the ones saying "research only." The heat is only rising
The Lancet 398(10296):262276 Bryant MG, Bloom SR, Polak JM, Hobbs S, Domschke W, Domschke S et al (1983) Measurement of gut hormonal peptides in biopsies from human stomach and proximal small intestine
General disclaimer: These are just my thoughts
Wegovy highlights upwards of 15% net weight loss