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.
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Question: Therefore, contact lens wear should be discontinued to prevent further complications.

Answer: non-adverse drug event


Question: To date, stent fractures reported have been related to aggressive post dilation.

Answer: non-adverse drug event


Question: The purpose of this article was to provide a detailed review of the role of TNF-alpha in controlling hepatitis B viral infection and the clinical impact blockade might have on viral control.

Answer:
non-adverse drug event


