Assertion: phenytoin | /r/HasProperty | a first-line treatment
Facets:
value: due to concerns over adverse events
type: CAUSE
value: no longer
type: TEMPORAL
Source sentences:
text: Phenytoin is no longer considered a first-line treatment, due to concerns over adverse events associated with its use, but the drug is still commonly used in low- to middle-income countries because of its low cost.