Glutathione Supplementation: The Antioxidant Your Body Needs Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Nature Protocols Glutathione Assist Capsules Paraxanthine enhances memory and neuroplasticity more than caffeine in rats Experimental Brain Research Springer Nature Link 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