Vigorous Muscle Maximizer The second biggest supplement is glutamine. Found in large supply in the muscle tissue, L Glutamine is an amino acid. Glutamine has many functions in the body. It is necessary for the immune system to battle sickness. It helps promote the process of HGH(Human Growth Hormone), which is they key to fat metoblization and muscle development. And most importantly it is responsible for maintaining a muscle maintenance and nitrogen balance. The most popular and most used supplements are proteins. This is due to the fact that protein is the simplest building block for muscle. Typically, per pound we require 1 to 2 grams of protein. lower carb OR weight gaining formulas are sold.