Muira Puama for Cognitive Function

Research suggests that Muira Puama (Ptychopetalum olacoides) may support cognitive function primarily through inhibition of acetylcholinesterase, the enzyme responsible for breaking down acetylcholine, a neurotransmitter central to memory and learning. Studies indicate that oral and injected extracts of the plant reduced acetylcholinesterase activity across multiple brain regions — including the hippocampus, frontal cortex, and striatum — in rodent models, and one study found that treated mice showed less cognitive impairment, reduced amyloid deposits, and less neuronal loss in an Alzheimer's-like model. All three available studies are animal-based laboratory or preclinical studies, meaning the findings cannot be directly applied to humans, and no randomized controlled trials or clinical studies in human populations were included in this body of evidence. While the consistency of direction across these preclinical studies is notable, significant limitations remain, and further research — particularly human clinical trials — would be needed before broader conclusions about efficacy can be drawn.