Alpha-GPC

L-Alpha Glycerylphosphorylcholine · Choline Alfoscerate

Snapshot

Indications	Contraindications
Cognitive impairment¹ Vascular cognitive impairment² Post-stroke recovery³ Alzheimer's disease symptoms^{1, 4–6} Subthreshold depression⁷	Pregnancy or nursing⁸ Under 18 years of age⁸ Soy allergy⁸

Alpha-GPC (L-alpha-glycerylphosphorylcholine), also called choline alfoscerate, is a choline-containing phospholipid metabolite that acts as a precursor of choline and acetylcholine, supporting cholinergic neurotransmission⁹. Supplementation is used for cognitive impairment from Alzheimer's disease, vascular dementia and cerebral ischemia⁹. Typical patients are older adults with cognitive decline from neurological or cerebrovascular conditions.

A meta-analysis found better cognition, function, and behavior with alpha-GPC, mostly combined with donepezil, in cerebrovascular-related impairment¹. A separate meta-analysis favored it in vascular and post-traumatic mild cognitive impairment². Several supporting trials are older open-label studies using injectable regimens¹⁰. Evidence in subthreshold depression is a 2026 open-label pilot. A 2026 Korean retrospective cohort found alpha-GPC use was not associated with kidney cancer risk, a question raised by its link to trimethylamine N-oxide¹¹. Products are sold mainly as capsules, plus powders and liquids; see Form comparison.

Reviews note that possible risks of atherosclerosis and stroke await validation⁹. Health Canada labels ask for a practitioner's advice before use in pregnancy or breastfeeding¹².

Last updated October 16, 2026. Read how we make monographs.

In the full monograph

43 sources, 27 studies

When to useThe situations practitioners use it for, each with the reason and the study behind it.
SafetyWho should avoid it, who needs extra care, and the side effects reported in studies.
InteractionsThe medicines and supplements it interacts with, the effect of each, and what labeling says to watch.
Protocol notesThe doses used in studies, how and when they were taken, and how the forms on the market compare.
How it worksWhat it is and how it works in the body, in plain terms.
Published studiesThe studies behind each use, popular claims checked against them, and trials still under way.
Word of mouthWhat patients and practitioners report online, kept separate from the clinical evidence.
Clinical perspectiveA closing read of where the evidence is solid, where it is thin, and what has not been studied.

Snapshot

In the full monograph

Sources