Other ingredients
Alpha GPC
Names you may see: alpha-GPC A-GPC choline alfoscerate glycerylphosphorylcholine
The quick take
Alpha GPC is a choline-containing compound studied for cognitive and exercise-related effects.
A closer look
What forms will I see on a label?
Labels may use alpha-glycerylphosphorylcholine, alpha-GPC or choline alfoscerate. Compare the active amount, especially in blended powders.
Why people use it
It is used in focus and pre-workout formulas for concentration, power and strength goals.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
A small, short trial found an improvement in one isometric strength measure. This does not establish long-term muscle-building benefits or reliable cognitive improvement in healthy users.
What should I know before using it?
Long-term safety deserves caution. An observational study linked use with higher stroke risk, but cannot prove cause and effect. Discuss use with a clinician, especially with cardiovascular risk factors or other medicines.
Sources & further reading
Published alpha GPC strength trial ↗
JAMA Network Open — observational safety study ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.