Source Naturals L Tryptophan 500mg 120 caps

Source Naturals - L-Tryptophan 500mg 120 caps. Mood, Relaxation, SleepThe essential amino acid L-tryptophan helps support relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep/wake cycles. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, L-tryptophan- Source Naturals - L-Tryptophan 500mg 120 caps.