Assertion: melatonin | /r/ObjectUse | used as preventive measure
Facets:
value: from artificial tanning
type: OTHER
value: for light-associated skin diseases
type: PURPOSE
Source sentences:
text: Aside from artificial tanning, Melatonin is used as a preventive measure for light-associated skin diseases while Melatonin II is used for erectile dysfunction, libido enhancement, and spontaneous erection.