Assertion: l tryptophan | /r/ObjectUse | used for premenstrual syndrome
Facets:
Source sentences:
text: L-tryptophan was a very popular sleeping aid in the United States until recently, and was also used for premenstrual syndrome and depression.
text: L-tryptophan was a very popular sleeping aid in the United States until recently, and was also used for premenstrual syndrome and depression.