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FDA 503B GLP-1 Exclusion Proposal (April 30, 2026): What It Means for Peptide Research On April 30, 2026, the FDA proposed formally excluding GLP-1 receptor agonists from the 503B bulk compounding eligibility list

Ding, Li

doi: 10.1097/PRS.0b013e3181923d07

All peptides are supplied for research use only (RUO)

Who Epithalon May Be For Epithalon may be a fit for: Adults focused on structured longevity planning who want conservative, physician-led protocol design Individuals with persistent sleep dysregulation where broader evaluation has been considered People who want to pair peptide protocols with appropriate diagnostics and follow-up Who Should Be Cautious Epithalon may not be appropriate if: Sleep symptoms are new, severe, or rapidly worsening without evaluation There is untreated obstructive sleep apnea, severe mood disorder symptoms, or significant neurologic concerns that need assessment first The goal is anti-aging outcomes without willingness to address fundamentals (sleep hygiene, stress load, training recovery, metabolic factors) A peptide protocol should not become a substitute for proper evaluation