Source Naturals L Tryptophan

The essential amino acid L-tryptophan is the precursor for the synthesis of melatonin and serotonin, a hormone and a neurotransmitter involved in mood and stress response. Features Source Naturals L Tryptophan The essential amino acid L-tryptophan helps support relaxation and restful sleep for overall health. L-Tryptophan promotes the production of melatonin. Provides immune system support.