Alpha-GPC
Commonly used for
Muscle & StrengthFocusAthletic Performance
Where to Buy
Our experts personally review each product we recommend for quality and cost effectiveness.
The cheapest product is usually low quality, but more expensive doesn’t always mean better.
The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Wellness uses some people report: use as a general cognitive-performance 'nootropic.' This is anecdotal, and there isn't strong clinical evidence that it works for everyone. Alpha-GPC is a highly bioavailable source of choline used to produce acetylcholine a neurotransmitter involved in memory, attention, and muscle contraction. Research suggests modest benefits for cognitive performance and possibly explosive power.
How is it used? / Administration
Form: Alpha-GPC (L-alpha glycerylphosphorylcholine) ≥99% purity
Typical dose studied: 300–600 mg/day for cognitive support; 600 mg pre-training for power output
Timing: Morning or 30–90 min before training
Crosses the blood-brain barrier efficiently. More expensive than other choline sources but better absorbed for cognitive use.
How well does it work? / Evidence
? Emerging / limited evidence
Who should avoid it?
Interacts with: Cholinergic or anticholinergic medications — consult clinician
Already taking it? Consider total daily choline intake from other supplements to avoid excess.
Research & references
Marcus L et al. (2017). Alpha-GPC and physical and psychomotor performance. JISSN. Ziegenfuss TN et al. (2008). Alpha-GPC and markers of explosive strength. JISSN. Parr JW et al. (2015). Acute alpha-GPC and isometric strength. JISSN.
Disclosure: Knozela is a participant in the Amazon Associates affiliate program. Some "Where to buy" links on this page are affiliate links -- if you make a purchase through them, Knozela may earn a commission at no additional cost to you.