1825
Table of Contents > Health Dictionary > L-tryptophan

L-tryptophan

The levorotatory form of tryptophan that is a precursor of serotonin and was formerly used in some health food preparations in the belief that it promoted sleep and relieved depression.
Healthy Living Marketplace
Now Food
Jarrow Formulas
Aubrey Organics
Wakunaga of America
American Health
Garden Of Life