Alpha-GPC Research & Evidence

SupplementScience.ai Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026

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Evidence Level

Moderate

Alpha-GPC has moderate clinical evidence supporting its use for cognitive enhancement and athletic performance. De Jesus Moreno (2003) conducted the largest trial, showing significant cognitive improvements in 261 Alzheimer's patients at 1200mg/day over 180 days. Ziegenfuss et al. (2008) established its ergogenic potential, demonstrating a 14% increase in peak force production. As a choline source, Alpha-GPC delivers approximately 40% choline by weight, making it the most efficient supplemental source for raising brain acetylcholine levels.

Evidence by Condition

Condition	Studied Dose	Evidence
Cognitive enhancement	300-600mg daily	Moderate
Athletic performance	600mg 90 minutes pre-workout	Moderate
Cognitive decline	1200mg daily in 3 divided doses	Moderate

Full Alpha-GPC Guide

References

De Jesus Moreno M (2003). Cognitive improvement in mild to moderate Alzheimer's dementia after treatment with the cholinergic precursor choline alfoscerate. Clinical Therapeutics. DOI PubMed
Ziegenfuss T, Landis J, Hofheins J (2008). Acute supplementation with alpha-glycerylphosphorylcholine augments growth hormone response to, and peak force production during, resistance exercise. Journal of the International Society of Sports Nutrition. DOI
Kawamura T, Okubo T, Sato K, et al. (2012). Glycerophosphocholine enhances growth hormone secretion and fat oxidation in young adults. Nutrition. DOI PubMed