Source Naturals Free Form L-Glutamine Vitamin | 500 mg | 100 Caps. Amino acid that helps keep your mind sharp o Has a molecular structure that allows it to nourish the brain easily o Converts to glutamic acid, a precursor to GABA o o Source Naturals Free Form L-Glutamine Vitamin | 500 mg | 100 Caps o Sold by Swanson... - Source Naturals Free Form L-Glutamine Vitamin | 500 mg | 100 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 ... - Source Naturals - L-Tryptophan 500mg 120 caps.