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:
A literature search conducted to determine the mechanism behind the antagonism of this overdose showed that promethazine interacts with receptors in the central nervous system.

Ex Output:
non-adverse drug event


Ex Input:
This report deals with a 54-year-old man with loss of memory.

Ex Output:
non-adverse drug event


Ex Input:
It was highly suspected that finasteride was associated with the anterior subcapsular opacity on the lens, and the patient therefore discontinued use of finasteride.

Ex Output:

adverse drug event


