PERC is a no crash, all natural, easy to swallow capsule that helps the body manage common stressors that lead to fatigue, unlike classic stimulants that try to power through stressors. PERC uses a blend of amino acids and herbal extracts to improve the body’s response to physical, emotional and biological stressors. PERC’s proprietary blend includes Rhodiola Rosea L-Carnitine, Grape Seed Extract and L-Tyrosine.