NOW Foods L-Glutamine Powder 1 kg delivers pure pharmaceutical-grade L-glutamine in an economical 1 kilogram bulk powder — ideal for athletes, bodybuilders, or those using therapeutic glutamine doses for gut health who need a large, long-lasting supply. L-glutamine is the most abundant amino acid in the body and the primary fuel source for intestinal enterocytes and immune cells. During intense exercise, illness, or surgery, glutamine demand far exceeds the body's ability to produce it, making supplementation essential for gut barrier integrity, immune function, and muscle recovery. The unflavored powder dissolves easily in water, juice, or protein shakes. NOW Foods uses pharmaceutical-grade glutamine without fillers or additives, manufactured in their GMP-certified facility with identity verification. At 1 kg, this provides outstanding value for high-dose or long-term supplementation.