The amino acids 5-hydroxytryptophan (5-HTP) and l-tryptophan are precursors of serotonin. 5-HTP is generally recommended over l-tryptophan because it crosses the blood-brain barrier at a higher rate, ...

The normotensive Wistar-Kyoto rats (WKYs) serve as controls in the “genetic model” of hypertension as represented by the spontaneously hypertensive rats (SHRs). L-Tryptophan does lower blood pressure ...

Tryptophan is one of 20 essential, naturally occurring amino acids, which are the building blocks of proteins. Your body is not able to manufacture its own tryptophan; therefore, it must get it from ...

No Thanksgiving is complete without a turkey at the table—and a nap right after it’s eaten. The meat has a bad reputation for making eaters sleepy, but is there really science to back that up? Here’s ...