Travel with Prescriptions: What You Need to Know Before You Go

When you travel with prescriptions, taking your medications across borders requires more than just packing your pill bottle. Also known as international travel with prescription drugs, it’s not just about having enough pills—it’s about proving you’re allowed to have them where you’re going. Many countries treat even common medications like opioids, ADHD drugs, or benzodiazepines as controlled substances. Bring them without the right paperwork, and you could face fines, detention, or confiscation—even if they’re legal at home.

You’ll need more than a prescription label. A doctor’s letter for controlled substances, a signed, dated document from your prescribing clinician that lists your meds, dosage, and medical need. Also known as controlled substances travel letter, this isn’t optional for drugs like oxycodone, Adderall, or Xanax. Airlines and customs don’t care if your bottle says "for personal use." They need proof your doctor approved it. The letter must include your full name, passport number, drug names (generic and brand), dosage, frequency, and the reason you need it. Some countries even require it on official letterhead with a stamp or seal.

And don’t forget your medication list template, a simple, updated record of every drug you take, including supplements and over-the-counter pills. Also known as printable medication list, this helps if you lose your meds, need emergency care abroad, or get questioned by officials. It’s not just for travelers—it’s for anyone on multiple meds. Keep a printed copy in your wallet and a digital version on your phone. Include names, doses, prescribing doctor, and pharmacy contact info.

Some meds you take daily might be banned in another country. For example, pseudoephedrine is restricted in Japan, melatonin is a prescription-only drug in the UK, and codeine is tightly controlled in Australia. Always check the rules of your destination before you pack. Don’t assume your home country’s rules apply everywhere.

Carry your meds in their original bottles with your name on them. Never put them in a pill organizer for international trips—even if it’s convenient. Customs agents want to see the pharmacy label. If you need to split doses, keep the original bottle with you and only use the organizer for short-term travel within your own country.

When flying, always pack your prescriptions in your carry-on. Checked luggage can get lost, delayed, or stolen. If you’re traveling with insulin, syringes, or injectables, bring a doctor’s note explaining why you need them. TSA and international security will ask. Be ready.

And if you’re tapering off something like benzodiazepines or opioids, don’t try to adjust your dose mid-trip. Withdrawal can hit fast and hard—especially in unfamiliar time zones or stressful environments. Stick to your plan. Bring extra in case of delays.

There’s no single global rule for meds. Every country has its own list of banned or restricted drugs. Some require permits months in advance. Others let you bring a 30-day supply with a prescription. You can’t guess your way through this. Use trusted sources like your country’s embassy website or the World Health Organization’s guidelines. Don’t rely on forums or advice from strangers.

Below, you’ll find real-world guides that cover exactly what to do: how to write a doctor’s letter that works, what to do if your meds get seized, how to carry multiple prescriptions safely, and which common drugs could land you in trouble abroad. No fluff. No theory. Just what you need to know before you book your flight.