Since MPC and MPI are made up of Casein and Whey Proteins, we can look at the glutamine content of each protein to get an idea of the glutamine content of the respective product. Whey protein is reputed to contain roughly 7% to 8% glutamine (per 100 grams of amino acids). Casein has a slightly higher glutamine content that usually ranges from 8% to 10% (per 100 grams of amino acids). MPC and MPI will usually contain 7% to 9% glutamine, based on the total amino acids present. That means that our MPC-80 powder will have an “as is” glutamine content of roughly 6.5% to 7.5% and our MPI-85 powder will have an “as is” glutamine content of 7% to 8%.