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 recovery required an average of 42 days and was complete in four of five patients.
Example Output: non-adverse drug event

Example Input: This was initially diagnosed as a spreading dental infection.
Example Output: non-adverse drug event

Example Input: A young patient experienced marked sinus tachycardia while smoking marijuana and receiving therapeutic doses of nortriptyline.
Example Output:
adverse drug event