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 Input:
There is no consensus on the treatment of ticlopidine-induced marrow aplasia.

Ex Output:
adverse drug event


Ex Input:
Therefore, contact lens wear should be discontinued to prevent further complications.

Ex Output:
non-adverse drug event


Ex Input:
Surprisingly, we found that three patients appeared to develop tardive OGC while taking clozapine.

Ex Output:

adverse drug event


