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: Ulcer became worse after tobramycin and gentamycin treatment for 2 days.
Example Output: adverse drug event

Example Input: Nevertheless, symptomatic CH has been reported in association with various underlying diseases.
Example Output: non-adverse drug event

Example Input: A case of a 21-year-old woman who had developed mild hepatotoxicity while receiving choline magnesium trisalicylate therapy is described.
Example Output:
adverse drug event