Natural Factors Stress-Relax Peaceful Zzz - is a non-melatonin sleep and stress formula that mimics melatonin’s action and helps reduce cortisol, a biomarker of stress. It features Maizinol, a standardized non-GMO corn leaf extract that has been clinically studied to help support better sleep quality and a healthy mood balance. Its unique composition has a remarkable affinity for cell receptors that activate the body’s melatonin and serotonin systems to facilitate these sleep- and mood-related hormones.