10 Muscle Building Supplements

6. Glutamine

Glutamine is a naturally occurring nonessential amino acid found in the greater amounts than all other amino acids in the body that is vital in muscle synthesis and muscle growth.

Bodybuilders find that glutamine supplements enable them to work harder for longer periods of time. This may be because of glutamine's ability to slow muscle-tissue breakdown.

Glutamine may also play a role in burning fat, making the metabolism more efficient. It gives the immune system a boost, making you healthier and more able to commit to workouts, and decreasing recovery time after that.

For maximum results, glutamine supplements should be taken during breakfast, before a workout, and after a workout.