April 28, 2026 · 6 minutes read
The 100ml Loophole: Carrying Peptides Through EU Customs in 2026
Medical exemptions let you carry peptide vials over 100ml through EU airports. How to declare, what to say, and airport-by-airport tactics for LHR, CDG, FRA, and NCE.
Key Takeaways
- Medical exemptions exist. Declare your peptides as medically necessary liquids.
- Say: "I have medically necessary liquids and sharps. Here is my doctor's letter."
- Your Zkomi Vault holds documents. Zero-knowledge. Border control sees nothing private.
Section 1: The New EU Liquid Rules
Yes, you can carry peptide vials over 100ml. Declare them as medically necessary liquids. Show your doctor's letter.
Europe recently reinstated 100ml limits at major hubs like LHR, CDG, and FRA. However, medication is strictly exempt. Do not try to hide your vials; declare them proactively.
Section 2: The Magic Words
When approached by security, say: "I have medically necessary liquids and sharps. Here is my doctor's letter."
Precision in language is your best tactical tool. Avoid using phrases like "research peptides" or "not for human use," as these trigger safety protocols. Be calm, be direct, and let the documentation do the talking.
Section 3: The Zkomi Vault
The Zkomi Vault stores your prescription and doctor's letter locally on your device using zero-knowledge encryption.
This means no one — not even the Zkomi team — can see your data. When at a checkpoint, open the app, tap "Customs Vault," and present the QR code or digital letter. It is the gold standard for privacy during transit.
Section 4: Airport-by-Airport Tactics
- LHR (London Heathrow): Historically the strictest. Allow an extra 30 minutes for manual liquid inspection.
- CDG (Paris Charles de Gaulle): Generally fast. Use the phrase "médicament nécessaire" for immediate clarity.
- FRA (Frankfurt): Expect precision. Ensure you have both digital (Zkomi) and paper backups.
- NCE (Nice Côte d'Azur): The gateway to Cannes. Smaller and often friendlier, but highly accustomed to medical tourists.
Section 5: Ice Packs & Cold Chain
To pass security, ice packs must be frozen solid at the checkpoint. Slushy or liquid packs will be rejected.
Freeze your packs for at least 12 hours before travel. Use a high-quality vacuum-insulated cooler. If you have a long layover, ask an airport lounge attendant for freezer access to maintain the "solid state" required by EU law.
🦊 Flying into LHR, CDG, or FRA? Zkomi's Customs Vault stores your doctor's letter locally. Border control sees only what you approve.
Need emergency resources?
If your peptides were confiscated, compromised, or you need emergency contacts — visit the SOS Registry.
Peptide Travel Editorial Team
Independent researchers and performance travelers with firsthand experience navigating customs across 30+ countries. Our guides are written from direct travel experience and cross-referenced against official customs and regulatory sources.
This content is reviewed quarterly and updated when regulations change. Last reviewed: May 2026
Not medical advice. Always consult your physician before traveling with any pharmaceutical compounds. Verify all regulations with official government sources.
Last updated: May 2026
Not medical advice. Always consult your physician and verify regulations with official customs authorities.
Explore more: Airport Rules | Europe Regulations | Basic Packing List (Free) | Peptide Nomad App