🇺🇸 Peptide Regulations in United States

Legal Status

Peptides used for legitimate research purposes are generally legal to purchase and possess. They are classified as research chemicals, not controlled substances (unless specifically scheduled). The FDA regulates peptides as drugs when intended for human therapeutic use; selling peptides labeled for human consumption without FDA approval is illegal. Compounding pharmacies may prepare peptide formulations under the Federal Food, Drug, and Cosmetic Act sections 503A (patient-specific) and 503B (outsourcing facilities). In early 2025, the FDA placed several popular peptides — including BPC-157 and several others — on the Category 2 list of the drug shortage bulk substances framework, effectively restricting their compounding. GLP-1 receptor agonists (semaglutide, tirzepatide) face evolving compounding rules following the resolution of brand-name shortages.

Compounding Rules

• 503A pharmacies may compound patient-specific prescriptions using bulk drug substances listed in the FDA's bulks list or accepted via nomination.
• 503B outsourcing facilities may compound without individual prescriptions but must comply with current Good Manufacturing Practice (cGMP) and FDA inspection.
• The FDA maintains a list of bulk drug substances that can be used in compounding; peptides must appear on this list or have a pending nomination.
• Category 1 substances are generally permitted for compounding; Category 2 substances have been evaluated and are NOT eligible for compounding.
• BPC-157, AOD-9604, and several other peptides were moved to Category 2 in early 2025, prohibiting their compounding by 503A and 503B pharmacies.
• Compounding of semaglutide and tirzepatide was permitted during verified drug shortages but faces restrictions as shortages resolve.

Personal Importation

• The FDA's personal importation policy allows individuals to import small quantities of unapproved drugs for personal use under limited circumstances.
• The product must be for a serious condition with no adequate domestic treatment, not represent an unreasonable risk, and be for personal use (typically a 3-month supply or less).
• This is an exercise of enforcement discretion, not a legal right — the FDA can seize imports at any time.
• Importing peptides labeled 'for research use only' for personal consumption technically falls outside this policy.
• Customs and Border Protection (CBP) may inspect and seize packages containing undeclared pharmaceutical substances.

How to Verify Legality

• Check the FDA's drug database (Drugs@FDA) to see if a peptide has any approved formulations.
• Review the FDA's bulks list and Category 2 determinations at fda.gov/compounding.
• Consult your state's pharmacy board for state-level compounding restrictions.
• Verify vendor compliance: legitimate research chemical suppliers will label products 'for research use only' and not make therapeutic claims.
• Check the DEA's schedules of controlled substances and your state's equivalent list.