instruction:
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.
question:
Spontaneous regression of the lesions was noted after discontinuation of the treatment.
answer:
non-adverse drug event


question:
CASE DESCRIPTION: A 24-year-old 732-kg (1,610-lb) pregnant Belgian draft horse mare developed neuropathy and signs of intractable pain following colic surgery.
answer:
non-adverse drug event


question:
Adult respiratory distress syndrome after treatment with pegylated interferon alpha-2a and ribavirin.
answer:

adverse drug event