Glutamine is for intestinal health whereas glutathione is for detoxing of the liver. If you took NAC (N-acetyl-cysteine) with the glutamine it will replenish glutathione. However each has its own essential purpose.
Our bodies require on a daily basis 60 minerals, 16 vitamins, 12 essential amino acids and 3 essential EFA's. Just missing 1 mineral can cause a debilitating illness and/or disease.
First and foremost one must supply the body with the proper nutrients in order to heal itself. Unfortunately we can't get those from food, the soil is severely depleted of these 60 minerals, there are few to none. It is important to get on a supplement that has these mineral/vitamins/amino acids/efa's that are bio-availble. Best is liquid especially for people who have digestive issues, which is most of us.