GABA In addition to its role

In addition to its role in or maintaining cardiovascular and immune function

and vitamins including 2500 units of vitamin D

You would not have this effect in the minute amounts of Arginine that are found in many pre workout formulas

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GABA In addition to its roleGABA supplementation in humans has shown support for the maintenance of healthy cortisol and IgA levels while under stress. People with insomnia often have reduced levels of GABA. Many sedatives work by improving the ability of GABA to bind to specific receptors in the brain. Yet, these pills do not contain GABA themselves and many have side effects and carry a risk of addiction.