BackgroundIn cases of non‐infectious diarrhoea in children, the WHO and the Thai Antibiotic Smart Use (ASU) project recommend that no antibiotics should be given and drinking water should be replaced with oral rehydration salt (ORS) solution until the diarrhoea is finished. AimTo survey the dispensing pattern for non‐infectious diarrhoea treatment in children in Thailand. MethodsSimulated clients visited 91 Class I community pharmacies in five districts in Khon Kaen province and asked for advice to treat non‐infectious diarrhoea in a 14‐month‐old child. The patient history questions asked by the dispensers, the medications dispensed and non‐pharmacological advice given were recorded by the simulated clients immediately after leaving the pharmacy. ResultsIn this study, ORS solution was correctly dispensed to the simulated clients in only 7.7% of pharmacies with 68.1% incorrectly dispensing antibiotics. More than half of the dispensers (57.1%) did not give any advice regarding non‐pharmacological treatment. ConclusionThe results of this study indicate the need to implement a program to emphasise the importance of providing ORS and discourage the dispensing of antibiotics in this circumstance.