they probally don't have it listed on there web site but if you request thier catalog, DPSnutrition has 1 kilo of glutamine peptides for 29$. the company that makes them is called
AR Nutrition.
I am currently using it and it's proven to be effective.
the only thing with glutamine peptides is they taste like shit and they don't mix well, but i usually mix mine with my protien shake.