Are glutamine supplements any good for me?

There are several facts about glutamine that do make it an intriguing potential ergogenic aid. It is the most abundant amino acid in the body. And glutamine supplements are frequently used in certain medical situations – mostly involving people who are critically ill and/or recovering from traumatic injuries or wounds. The scientific literature actually does contain ample support for the use of glutamine in this regard.

But, are they any good for your fitness enhancement?
http://www.deniscollier.com/sports-nutrition-performance-building-muscle-registered-dietitian-certified-exercise-physiologist/glutamine-supplements/