Can you bring Dextromethorphan (Robitussin DM, Delsym) to Thailand?
You can bring a normal personal supply of dextromethorphan cough medicine (Robitussin DM, Delsym) without special paperwork. In Thailand it is sold by pharmacists without a prescription.
Bringing it into Thailand
Allowed for personal use
Dextromethorphan is not named in the Thai narcotic or psychotropic traveller guidance we checked, so it appears to fall under the general rule: a personal supply of up to 30 days, in original labelled packaging. No permit or declaration should be needed for a normal personal amount. Do not confuse it with codeine cough syrups, which need a narcotics permit.
Getting it in Thailand
From a pharmacist, no prescription usually needed
Dextromethorphan cough medicines are sold in Thai pharmacies, dispensed by a pharmacist, without a doctor's prescription.
- Thai classification
- Dangerous drug (per a Thai health information site; not confirmed from an official source)
- Last checked
- 13 November 2026
- Source quality
- Low: limited sources, confirm with the Thai FDA
What to carry
- Original packaging with the label visible
- No more than 30 days' supply
- A copy of your prescription, if it is a prescription medicine at home
Good to know
- Check the label: some cough syrups contain codeine instead of, or as well as, dextromethorphan, and those need a narcotics permit.
Rules change. Before you travel, confirm with the Thai FDA (permitfortraveler.fda.moph.go.th) or the Royal Thai Embassy in your country. This page is information, not medical or legal advice.