ChronoPillCarrying medication across borders
A medication that is routine at home can be controlled, restricted, or prohibited somewhere else. These guides explain how international drug control works, what to check before you fly, and where the authoritative answers live: your pharmacist and the destination country's consulate.
Why "legal at home" can mean "controlled abroad"
Three UN conventions define which substances are internationally controlled. The International Narcotics Control Board (INCB) publishes the consolidated lists. If one of your active substances appears on a list, the destination country decides what that means at its border.
1961 narcotics
Substances scheduled under the 1961 Single Convention on Narcotic Drugs. Examples on the list: codeine, morphine, oxycodone, fentanyl, methadone, hydrocodone, cannabis.
1971 psychotropics
Substances scheduled under the 1971 Convention on Psychotropic Substances. Examples on the list: diazepam, alprazolam, lorazepam, zolpidem, phenobarbital, methylphenidate, amfetamine, buprenorphine.
1988 precursors
Chemicals controlled as precursors under the 1988 Convention, including pseudoephedrine and ephedrine, which appear in everyday cold remedies. The INCB notes such over-the-counter products are restricted or banned in some countries.
These lists are the international floor, not the whole story. Countries add their own schedules: tramadol is on none of the INCB lists, yet it is nationally controlled in the United States, the United Kingdom, and France (ChronoPill in-app travel reference, August 2026). Presence on a list means "verify before travel with your pharmacist or the destination's consulate", not "travel is impossible".
Country guides
One page per country ChronoPill supports, each built from the same sources: the country's official INCB traveller filing and the official medication database that ships inside the app.
Filing dates come from the INCB country directory. Record counts are the size of each country's official medication database bundled in ChronoPill (BfArM/AMIce, openFDA/DailyMed, AEMPS CIMA, PMDA/MHLW, BDPM/ANSM, AIFA, AMMPS).
Before any international trip: the checklist
Informational, not exhaustive, and never a substitute for the destination's own rules.
- Keep every medication in its original, labeled packaging.
- Carry your prescription, and know the active substance name (INN) of each medication: brand names change across borders, the molecule does not.
- Check whether any of your active substances appears on the INCB Yellow, Green, or Red list. If it does, treat it as "verify before travel", not as "cannot travel".
- Read your destination's own INCB filing (linked in the guides above): it is the country's declared reference for travellers carrying controlled medicines, including carry limits and required documents.
- Ask your pharmacist which documentation applies to your medication, for example a Schengen certificate for travel with controlled medication inside the Schengen area.
- If the destination operates an advance import permit (Japan is a documented example), start the paperwork early: applications can take weeks.
- For anything unclear, contact the destination country's consulate or embassy before departure. They are the authoritative source.
How ChronoPill's Travel Mode helps
ChronoPill bundles the official medication databases of 7 countries (US, Germany, France, Spain, Italy, Japan, Morocco) on your iPhone: 500,000+ records, fully offline. When you set a destination, Travel Mode:
- Flags medications in your list whose active substance is internationally controlled, and names the substance
- Maps each medication to its local equivalent by active substance (INN), with the destination-language name
- Generates a pharmacist card you can hand over at any counter abroad
- Shifts your dose schedule to the destination time zone automatically
Travel alerts are informative only: they tell you which substance to verify and with whom (your pharmacist, the destination's consulate). They never tell you to skip a dose or leave a medication behind.
Frequently asked questions
What makes a medication internationally controlled?
Three UN drug-control treaties define international scheduling: the 1961 Single Convention on Narcotic Drugs, the 1971 Convention on Psychotropic Substances, and the 1988 Convention covering precursor chemicals. The International Narcotics Control Board (INCB) publishes the consolidated lists: the Yellow List (139 narcotic substances), the Green List (115 psychotropic substances), and the Red List (21 precursor entries).
If an active substance in your medication appears on one of these lists, most countries apply special rules when you cross their border with it. What those rules are, and what documents they require, is decided country by country: check the destination's INCB filing and confirm with your pharmacist or the destination's consulate.
My medication is over the counter at home. Can it still be restricted abroad?
Yes. Pseudoephedrine and ephedrine, found in common cold remedies, are listed as precursors under the 1988 Convention, and the INCB notes that such over-the-counter products are restricted or banned in some countries. Japan is a documented example: ChronoPill's travel reference notes pseudoephedrine as designated under Japan's Stimulants Control Act and effectively prohibited for import.
Before traveling, ask your pharmacist to check the active substances of any over-the-counter product you plan to pack, and confirm with the destination country's consulate.
My substance is not on any INCB list. Does that mean it is unrestricted?
No. The international lists are a floor, not a ceiling: each country adds its own schedules. Tramadol, for example, appears on none of the INCB lists, yet ChronoPill's travel reference notes it as nationally controlled in the United States (federal Schedule IV since 2014), the United Kingdom (Schedule 3 since 2014), and France (Liste I since 2011).
The reliable check is always the destination country's own rules: its INCB filing, its consulate, or your pharmacist.
Where do I find a country's official rules for travelers with medication?
The INCB maintains a public directory of official filings from 99 countries describing their rules for travellers carrying controlled medicines: carry limits, required documents, and prohibited substances. Each ChronoPill country guide above links the destination's filing directly.
For anything the filing leaves open, the destination country's consulate or embassy is the authoritative contact.
Does ChronoPill tell me whether I can bring my medication?
No, and by design. ChronoPill's Travel Mode names the substances in your list that are internationally controlled or flagged in its travel reference, shows local equivalents by active substance, and points you to the official sources. The decision-grade answer, including exact quantities and paperwork, must come from your pharmacist or the destination country's consulate. ChronoPill is not a medical device.
Sources
Every factual claim on this page traces to one of the sources below. INCB list membership was extracted from the editions named here on 31 May 2026.
- INCB, Yellow List, 64th edition (substances under the 1961 Single Convention on Narcotic Drugs): official PDF · INCB Yellow List page
- INCB, Green List, 2026 edition (substances under the 1971 Convention on Psychotropic Substances): official PDF · INCB Green List page
- INCB, Red List (precursors under the 1988 Convention, Tables I and II): official PDF · INCB Red List page
- INCB, Regulations by country for travellers carrying controlled medicines: country index (99 filings)
- ChronoPill in-app travel reference, last reviewed August 2026. Informational compilation, not an official source; where it is cited on this page, it is named explicitly.
ChronoPill is not a medical device and this page is not legal or medical advice. It is an informational summary of publicly available regulatory sources. Rules change, and the only authoritative answers come from the destination country's authorities. Before traveling, confirm every point that matters to you with your pharmacist and with the destination country's consulate or embassy.