Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

[EX Q]: The patient had a favourable outcome.
[EX A]: non-adverse drug event

[EX Q]: Asthma is one of the most common chronic medical conditions.
[EX A]: non-adverse drug event

[EX Q]: Pellagra encephalopathy among tuberculous patients: its relation to isoniazid therapy.
[EX A]:
adverse drug event