i buy powdered glutamine from the local supp store for like 10-20 bux. lasts couple months. just add it into protein drink
If you want to metabolize as much of that product as possible, this would be the worst way to take it.
The amino acid is dependent upon the appropriate uptake pathway in the intestinal lining, and in other parts of the body to delivery it to specific tissues. If you take glutamine along with any complete protein (dairy extracts, meat, eggs) it's having to compete with aspartic acid for the x-ag system to get transported across the intestinal lining. You don't want that.
Take BCAA's or any other amino either on an empty stomach or with carbs, at least a few hours away from complete protein, otherwise you're wasting some of it.