Monthly Archives: August 2012

l-Tryptophan

The essential amino acid l-tryptophan is a serotonin precursor. Research indicates that l- tryptophan supplementation may support emotional well-being and restful sleep. In a double blind placebo-controlled study, l-tryptophan supported healthy emotional processing and promoted positive outlook in women. In a separate study, it supported healthy mood and lessened occasional irritability during the menstrual cycle. […]