Assertion: tryptophan | /r/ObjectUse | used dietary supplement
Facets:
value: for reducing depressive symptoms
type: PURPOSE
value: widely
type: DEGREE
Source sentences:
text: Because tryptophan is widely used a dietary supplement for perceived benefits including sleep and mood regulation, there is a need for assessing its safety.
text: Now, tryptophan is an amino acid that serves as a raw material for serotonin synthesis, and it is used as a dietary supplement for reducing depressive symptoms.