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:
Physicians using this "new" drug must be aware of the potential danger of sulfonamide-induced injury to the urinary tract.

Ex Output:
adverse drug event


Ex Input:
Such anagen effluvium with lichenoid eruption following INH therapy has not been observed previously.

Ex Output:
adverse drug event


Ex Input:
Full recovery to pre-episode status of a quiet eye with clear vitreous was seen in all patients.

Ex Output:

non-adverse drug event