Assertion: tryptophan | /r/CapableOf | remain on the market
Facets:
value: as an augmenting agent for people
type: PURPOSE
value: as a prescription drug
type: MANNER
Source sentences:
text: Tryptophan has also remained on the market as a prescription drug (Tryptan), which some psychiatrists continue to prescribe, particularly as an augmenting agent for people who are unresponsive to antidepressant drugs.[citation needed]