For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information. Glutamine is one of the most abundant amino acids found int he skeletal muscles. Glutamine plays a pivotal role in the nitrogen balance in the body. Prolonged high-intensity exercise has been shown to decrease glutamine levels, which may result in glutamine deficiency.* Picture may be of different size or flavorGlutamine is one of the most abundant amino acids found int he skeletal muscles. Glutamine plays a pivotal role in the nitrogen balance in the body. Prolonged high-intensity exercise has been shown to decrease glutamine levels, which may result in glutamine deficiency. * Picture may be of different size or flavor