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.

Q: Inappropriate antidiuretic hormone following adenine arabinoside administration.

A: adverse drug event
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Q: CASE REPORT: A 64-year-old man was evaluated for chronic low-back pain after multiple spine surgeries.

A: non-adverse drug event
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Q: Quetiapine in relapse prevention in alcoholics suffering from craving and affective symptoms: a case series.

A:
non-adverse drug event
****