FDA is warning people NOT to use supplements containing L-5-hydroxytryptophan (PhenCal, Thin-Thin, etc.)
June 1998
The FDA is warning people NOT to use supplements containingL-5-hydroxytryptophan (PhenCal, Thin-Thin, etc).
L-5-hydroxytryptophan is a metabolite of L-tryptophan.
These amino acids are used to increase serotonin production.People take them for weight loss...depression...anxiety, etc.
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