1 Methylxanthine enhances memory and neurotransmitter levels PLOS One Glutathione Peroxidase: An Antioxidant Enzyme In Health And Disease Rapid and effective protocol to measure glutathione peroxidase activity Bulletin of the National Research Centre 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 Glutathione Mediated Neuroprotective Effect of Purine Derivatives Paraxanthine may represent the next wave of clean energy drinks with smoother stimulation, fewer jitters, and potentially better focus.