5-HydroxytryptophanThe serotonin levels in the body are associated with the regulation of sleep, mood, and appetite. A balanced serotonin level has been shown to support restful sleep, good mood, and decreased sugar cravings.* There are several ways to support a healthy serotonin level. L tryptophan and 5 Hydroxytryptophan (5 HTP) are both precursors to serotonin. However, supplementation with 5 HTP is preferable, because unlike L tryptophan, 5 HTP cannot be shunted