GLP-1 is a peptide hormone secreted by L cells in the ileum and colon
FDA's evaluation concluded that the criteria weighed against placement on the list, citing inadequate physicochemical characterization, immunogenicity concerns from impurities and aggregates, lack of clinical effectiveness data for any approved use, and absence of published human exposure data for the proposed subcutaneous and topical routes
Ocular Migraines: Potentially triggered by stress, hormonal changes, or medications affecting blood vessels, though the exact cause is unclear
Initial improvements in hair thickness and reduced shedding typically appear at 812 weeks
"Effect of melatonin and pineal peptide preparation epithalamin on life span and spontaneous tumor incidence in female SHR mice." Mechanisms of Ageing and Development , 122(1), 41-50
Although the word on Selanks safety is positive, dedicated safety studies English-language ones, at least are absent, and the few details we have are mentioned in passing