Nutricost L-Glutamine Powder L-Glutamine is an amino acid that is produced by the body. It is considered a conditionally essential amino acid, which means that the body can synthesize it as needed, but in some cases, such as during times of stress, the body may not be able to produce enough. L-Glutamine plays a key role in many biochemical processes. The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.