Supplementation is definitely a MUST for athletes, competitive lifters or those simply trying to take their fitness to the next level. If you are a casual weight lifter, we recommend checking out our Whey Better protein with HICA instead.
Other successful uses for Glutamine are for those who may be recovering from an injury/surgery OR supporting the muscle mass of athletes who may be on calorie-deficient nutrition plans.
Glutamine can be found in an overall health diet, consuming red meat, poultry, seafood, dairy, eggs, cabbage, nuts, beans and legumes, beets, carrots, kale, celery, spinach, fermented foods, etc. In order to get the recommended amount of glutamine per day naturally from food (for athletes on intense training programs), one would have to consume multiple servings of the above foods.
As an estimate, you would likely need to spend around $100-200/week to get enough from food, depending on things like age, height, weight, gender, and activity level, etc. Of course, these foods provide other nutrients, and you will likely eat some of these foods anyway, as you have to eat. However, many people choose to supplement so that they know they are consistently getting in enough glutamine to maximize recovery and training.