Legal Status of Peptides
Available over-the-counter in many pharmacies, but US customs limits re-entry. Many peptides are accessible without a prescription. COFEPRIS regulates pharmaceutical products, but enforcement on personal-use peptides is minimal.
Cross-reference this brief with our peptide travel regulations hub for neighbouring jurisdictions.
Airport & Customs Rules
- Minimal scrutiny for personal pharmaceutical items
- Carry documentation for peace of mind
- US-Mexico border crossings may involve more scrutiny returning to US
- Keep quantities reasonable
Airport Intelligence
Declaration threshold
Personal-use quantities pass routinely; declare if asked
Inspection likelihood
LowCommonly confiscated
- Bulk quantities that suggest resale or commercial import
- Unlabeled bulk powders >10g
- GLP-1s subject to current import alerts (US)
Airport-specific notes
- MEX / CUN: minimal scrutiny outbound; returning to US is the harder leg
- Land borders: secondary inspection more likely than at airports
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