Assertion: comfrey | /r/HasProperty | unfit
Facets:
value: due to the presence of pyrrolizidine alkaloids
type: CAUSE
value: for human ingestion
type: PURPOSE
value: via the oral route
type: OTHER
Source sentences:
text: Due to the presence of pyrrolizidine alkaloids, comfrey is considered unfit for human ingestion (especially via the oral route).