Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification A purine derivative, paraxanthine, promotes cysteine uptake for glutathione synthesis ScienceDirect 1 Methylxanthine enhances memory and neurotransmitter levels PLOS One Paraxanthine Improves Markers of Cognition and Memory in Animal Study Nutraceuticals World Paraxanthine enhances memory and neuroplasticity more than caffeine in rats Experimental Brain Research Springer Nature Link
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