Stoner,
Glutamine helps strictly with muscle recovery.
A lot of things like protein shakes, among other things, have some glutamine mixed in.
There are other products that will help with muscle recovery and also supplement other things as well.
For example, GAKIC (developed by UF :drink: ), decreases the flow of fatigue toxins to your muscles. It indirectly helps in recovery, like Glutamine, but also allows you to keep pumping out more reps, or higher weight at the gym - similiar to creatine. In fact, most studies show a 15-20% increase in strength first time taking it. That means no loading stage or anything like that, it kicks in immediately.
NO-EXPLODE also indirectly helps in recovery. By dilating your arteries, it carries more blood to the area you are breaking down. The more blood in the area, the more oxygen, nutrients, etc that are being sent there. Those are vital to building muscle quicker, and recovering.
So basically, Glutamine is a very very very basic supplement that can be taken. But other things will also do the trick, and add other benefits as well.