Assertion: melatonin's level | /r/CapableOf | put life
Facets:
value: at risk
type: OTHER
Source sentences:
text: It is impossible to overdose on melatonin since toxic levels of melatonin [that put life at risk] have never been registered," says Lorenzo Franceschetti M.D., a researcher at the University of Milan, who has conducted extensive studies on melatonin.