Paraxanthine, a compound your body creates when it breaks down caffeine, is being touted by some as a better alternative to coffee, offering energy and focus without the jitters. Click the link Paraxanthine: Caffeine's Major Metabolite for Laser Targeted Energy New Preclinical Study Shows Paraxanthine Enhances Memory and Brain Function Better Than Caffeine Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Nature Protocols Glutathione System from Cyanobacteria to Higher Eukaryotes Encyclopedia MDPI