Just FYI:
There have been no oral studies shown that show the efficacy of taking glutamine. Most Glutamine studies were done on burn victums and AIDS victums, whose levels of glutamine were already low. The glutamine in these studies was administered via IV.
Glutamine has shown some benefits for people on a hypocaloric diet. It increases recovery time, improves immune system function and reduces catabolism. Ideal dosages are usually between 20-30g, which is not very cost-effective IMO.
You can get glutamine in the form of glutamine peptides from your protein shakes and from other sources.
Does it help in bulking? In high enough dosages, sure. Does it assist in cutting? Again, in high enough dosages it can. To me, it boils down to affordability and value. The average cost for a month's supply of glutamine (600g) is a minimum of 25.00.