It turns out that T cells utilize quite a bit of glutamine to a) replenish TCA cycle intermediates ('anaplerosis') as well as to b) exchange for other amino acids. GLUTICAN Face Serum Glutathione, Kojic Acid Dipalmitate, Vitamin C, Arbutin & Papaya Extract Face Serum L Glutamine Powder 5g per Serving Momentous What is the difference between glutamine and liposomal glutathione? Knowledge Bioway Organic L Glutathione (Reduced), 500 mg, 120 Veggie Capsules