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.

Trazodone therapy was continued or reinstated shortly after the hypomanic episode without further evidence of hypomania.
non-adverse drug event

Three patients receiving gold salt treatment for rheumatoid arthritis developed severe aplastic anemia.
adverse drug event

The international literature regarding opportunistic infections after immunosuppressive therapy with alemtuzumab with particular attention on fungal infections has also been reviewed.

adverse drug event