I find that the only way to determine if something works for me is through trial and error. I use a similar product called Nu-Life Focus Formula, and have found that it has helped me. It does not have Glutamine in it.

Nu-Life Focus Formula Ingredients
Vitamin C 120mg
Vitamin E 30IU
Vitamin B6 10mg
Folic acid 0.4mg
Vitamin B12 30mcg
Phosphatidylcholine 48mg
Phosphatidylserine 5mg
Phosphatidylanolamine 40mg
Phophatidylinositol 28mg
Choline 125mg
Omega 3 (fish oil, 7.5% EPA/DHA) 100mg
Eleuthero 100mg
Ginkgo (ginkgo biloba) (24% flavonoglycosides,
6% sesquiterpene lactones) 60mg
Alpha Lipoic Acid 50mg
Vinpocetine 5mg
Huperzine-A 100mcg
Spinach 40mg
Blueberry juice (10:1 extract) 100mg