Glutamine is an essential protein building block. It also helps make other amino acids and removes waste products, like ammonia, from your body. It plays a key role in chemical (metabolic) processes that provide your body with the energy it needs to work. Glutamine powder has many benefits for your musculoskeletal, immune, and digestive systems. Research is also examining whether supplemental glutamine has any benefits. Studies show that people with certain illnesses and injuries may benefit from these supplements, mainly because they tend to have low levels of the amino acid. According to research, these are the possible benefits of glutamine: Supports the immune system Glutamine is the main fuel source for your body’s lymphocytes, white blood cells that fight infection and disease. But your blood’s glutamine levels drop when you’re sick or injured, reducing these immune cells’ ability to defend your body. Maintains gut health Glutamine helps strengthen your intestinal lining, protecting against damage and ensuring your body absorbs the nutrients it needs. Because of this, researchers are looking into whether glutamine supplements can help people with digestive disorders, such as Crohn’s disease and irritable bowel syndrome (IBD). May help muscle recovery Glutamine is necessary to maintain muscle protein, which is why it's a popular sports supplement. There are many claims about its ability to speed muscle recovery and improve athletic performance. Some study results show that it reduces muscle fatigue and improves exercise recovery.