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.

Example Input: The reaction subsided after treatment with diphenhydramine and dexamethasone.
Example Output: non-adverse drug event

Example Input: In all the patients, pellagra symptoms appeared during isoniazid therapy.
Example Output: adverse drug event

Example Input: Intradiscal injection of triamcinolone hexacetonide for acute, subacute, and chronic sciatica.
Example Output:
non-adverse drug event