4Life NanoFactor Glutamine Prime is food for your immune system cells! Feed your immune system with an exclusive formula featuring glutamine—an amino acid that serves as a major source of immune system cell fuel. Glutamine Prime also contains NanoFactor^®, a proprietary concentrate of micro-filtered cow colostrum for more effective cell communication. Glutamine Prime is an excellent companion product to the complete line of 4Life Transfer Factor^® products. Take four to six (4–6) veggie capsules daily to nourish your immune system cells, and in turn, fuel your immune system!