Citrulline is a non-essential amino acid that is an important intermediate in the urea cycle, functioning along with other amino acids to rid the body of ammonia, a byproduct of protein metabolism.*
Citrulline also plays an important role in the healing process and in the maintenance of a healthy immune system. It also helps with waste disposal and clearing the body of the toxic by-products of exercise like ammonia.*
Perhaps the most sought after benefit of citrulline is nitric oxide production to improve muscle pumps during exercise.*
A Spanish study in 2010 even found that participants using Citrulline were able to achieve 50% more bench presses reps when working to muscle failure then their counterparts who didn’t. Even after doing more reps than their competitors, weight lifters who used Citrulline reported less soreness and stiffness following their workouts.