Designer Physique Immuno Boost is your key to optimal performance. It is made from L-Glutamine, an amino acid that the body manufactures. Glutamine stores in the body are in great demand, especially during times of intense stress such as physical training. Whilst training, Glutamine levels are greatly depleted in your body, which decreases strength, stamina and recovery. It could take up to 6 days for Glutamine levels to return to normal and Glutamine plays a key role in protein synthesis. Studies have shown that L-Glutamine supplementation can minimize the breakdown of muscle and improve protein metabolism. Your small intestines require the most Glutamine in your body and your immune system also needs Glutamine to keep illnesses at bay. This is why L-Glutamine supplementation is so important, not necessarily to gain more muscle, but for the maintenance of a healthy immune system.