Glutamine is the body's most plentiful amino acid. It supports immune cells, strengthens the gut lining, and helps build muscle protein.
Most people take L-glutamine as a powder or capsule. For digestive support, take it on an empty stomach. For muscle recovery, take it after exercise. The right dose depends on your goals and body weight.
Most people tolerate glutamine well. If you have kidney or liver disease, talk to a doctor before using it. Glutamine might interact with some cancer or seizure medications.