Caffeine Metabolite Improves Cognitive Function
As it turns out, caffeine may benefit energy levels in more ways than one. A 2021 clinical trial on the caffeine metabolite paraxanthine (PXN) examined the effects of 200 mg of PXN on cognitive function, reaction time, and memory. Paraxanthine is one of the ingredients in the branded supplement MuscleTech by Iovate Health Sciences.
After taking PXN, the subjects exhibited superior performance in a variety of cognitive tests such as the Psychomotor Vigilance Task test, the Sternberg Task test, and the Berg-Wisconsin Card-Sorting Correct Responses test. The study authors concluded that PXN may have nootropic properties at even low doses.6