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: Clinical and electrodiagnostic findings are discussed in detail and a brief review of the literature is presented.
Example Output: non-adverse drug event

Example Input: Physicians should be aware of the potentially lethal side effects of dapsone.
Example Output: adverse drug event

Example Input: He became hyperkalemic on rechallenge with timolol and normokalemic following its withdrawal.
Example Output:
adverse drug event

