Source Naturals Melatonin 1mg, 100 Tablets L-Glutamine, a free-form amino acid, can be converted to glutamic acid. Glutamic acid is a usable energy source for the brain and a precursor to the important inhibitory neurotransmitter GABA (gamma-aminobutyric acid). L-Glutamine also plays an important role in ammonia disposal. Features: Naturopathic Medicine Combining herbs, nutrients, nutraceuticals in one formulation Source Naturals Bio-Aligned Formulas are formulations with potent bio-active nutrients that go deep to the root causes of health imbalances and become powerful tools for vibrant health and well being. Product Details: Product Dimensions: 3 x 1.7 x 1.7 inches Shipping Weight: 0.3 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More UPC: 021078007197 Item model number: VBPUKPPAZINH1269