fda warning letters glp-1 compounders september 2025 Targets and Peptide Compounding, Advertising and 'Research Use Only' Labeling Beyond the Headlines: FDA Warning

This peptide stimulates the production of collagen and elastin, promoting skin firmness, reducing fine lines and wrinkles, and improving skin elasticity, making it ideal for anti-aging purposes

The small GTPase Arl8b regulates assembly of the mammalian HOPS complex on lysosomes

Form and Analytical Testing Powder (lyophilized sterile powder or free base crystals), 99% purity (HPLC), identity confirmed by mass spectrometry and chiral analysis, endotoxin 1000 mg/mL in water, appearance: white crystalline powder, storage 28C protected from light and moisture, reconstitution with sterile or bacteriostatic water under aseptic conditions, stability: 2436 months sealed refrigerated, 12 weeks reconstituted at 28C (avoid multiple freeze-thaw)

136 , jcs260912 (2023)

These advances do not change the fundamental classification