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Peptide.Guide
ClinicalCognitiveOralDaily

Alpha-GPC

Choline-delivery compound that raises brain choline and acetylcholine levels, commonly used as a nootropic.

Read dosing protocol

◆ Editorial note

Choline precursor, not a peptide.

§ 01   Overview

Overview

Choline-delivery compound that raises brain choline and acetylcholine levels, commonly used as a nootropic.

Small clinical trials in cognitive decline. Sold widely as a supplement.

§ 02   Mechanism

Mechanism of action

Alpha-GPC (L-alpha-glycerylphosphorylcholine) crosses the blood-brain barrier and serves as a substrate for acetylcholine synthesis. It also contributes to phosphatidylcholine in neuronal membranes.

  • 01Improved focus and memory in some studies
  • 02Used in cognitive and athletic protocols

§ 03   Dosing

Dosing protocol

Standard Protocol

Dose Range
300 – 900 mg daily
Starting Dose
300 mg
Route
Oral
Timing
AM
Frequency
Daily

§ 04   Evidence

Evidence & research

Clinical

Small clinical trials in cognitive decline. Sold widely as a supplement.

FDA Status

Dietary supplement in the US.

§ 06   News

In the news

8 articles from the last 12 months · updates hourly

§ 07   Sourcing

Sourcing & supply

Regulatory status

Available as dietary supplement

Sold as a dietary supplement. Quality varies widely by brand; prefer GRAS-designated products with third-party testing (e.g. Mitopure for Urolithin A).

No suppliers in our directory currently stock this compound. For investigational or research-only compounds, legitimate channels may not exist outside clinical trials.

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§ 09   Safety

Safety & side effects

Side effects

  • 01GI upset
  • 02Headache
  • 03Some observational data suggests possible stroke risk in long-term high use

Contraindications

None specified.

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This site is for educational and research purposes only. It does not constitute medical advice. Always consult a qualified healthcare provider before using any peptide or supplement.