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:
CONCLUSIONS: Priapism is an uncommon but potentially serious adverse effect of zuclopenthixol that practitioners, as with many other antipsychotics, should be aware of.
answer:
adverse drug event

question:
In all the patients, pellagra symptoms appeared during isoniazid therapy.
answer:
adverse drug event

question:
We describe a case of advanced ovarian carcinoma who developed difficulty walking because of marked pain in the lower extremities and loss of proprioception 25 days after treatment with weekly taxol (80 mg/m(2)x3).
answer:
adverse drug event