Travelling with your hepatitis B medication

Travel disrupts exactly the things daily medication depends on: routine, supply and time of day. It is one of the most common reasons people end up with a gap of several days, and it is almost entirely preventable with a bit of planning.

Before you go

• Count your supply and add a margin. Take more than the trip requires — delays, cancellations and lost bags happen. Running out abroad is much harder to fix than packing extra.
• Keep medication in your carry-on, in its original labelled packaging. Checked luggage goes missing; cabin baggage rarely does.
• Ask about a letter from your doctor listing your medicines. Some countries ask for documentation for prescription medication at the border, and rules vary by destination.
• Check the rules for where you are going, particularly for longer trips or multiple countries.
• Ask about vaccinations and precautions for your destination, and mention your liver condition — advice on things like hepatitis A protection may differ for you.
• Note where you could get medical care at your destination if needed.

Time zones

For a daily medicine, small shifts are usually manageable, but large time-zone changes raise a real question about when to take the next dose — especially if your medicine has a fasting window.

Ask your doctor or pharmacist before you travel how to handle the transition for your specific medicine. It is a short question with a clear answer, and much better resolved on the ground at home than at 3am in an airport.

While you are away

• Keep the reminder running, adjusted to local time once you have settled the plan.
• Watch the fasting window against unfamiliar meal times — late dinners abroad can quietly collide with an evening dose.
• Store medication within its temperature range. Hot cars, beaches and unshaded windowsills are the usual culprits.
• Do not decant everything into an unlabelled pill organiser for a border crossing; keep original packaging available.

If something goes wrong

If you lose your medication or run out, seek a pharmacy or doctor at your destination rather than simply waiting until you get home. Depending on the country, a pharmacist may be able to help directly, or you may need a local prescription — which is where a doctor's letter naming your medication earns its keep.

If there is a gap of several days, tell your doctor when you return so it can be taken into account when interpreting your next results.

Further reading

• World Health Organization — Hepatitis B fact sheet
• Hepatitis B Foundation
• ASHM — Australasian Society for HIV, Viral Hepatitis and Sexual Health Medicine