Assertion: chloroquine's drug | /r/ObjectUse | used for more than 70 years
Facets:
value: for malaria
type: PURPOSE
value: safely
type: MANNER
Source sentences:
text: The researchers wrote in their trial that while the chloroquine drug has been safely used for more than 70 years for malaria, using it at high dosages to treat Covid-19 “might be toxic” and they called for more research into the drug.