What is Alpha-GPC used for?

Reported uses include improved focus and memory in some studies and used in cognitive and athletic protocols. Evidence strength is rated Clinical — see the evidence section for detail.

How is Alpha-GPC dosed?

Commonly referenced dosing is 300 – 900 mg daily, administered Oral. This is educational reference only; consult a licensed clinician before use.

What are the side effects of Alpha-GPC?

Commonly reported side effects include gi upset, headache, and some observational data suggests possible stroke risk in long-term high use. This list is not exhaustive.

Alpha-GPC | Peptide Guide

§ 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

GMToday.com3d ago

Best Choline Supplements for a Daily Habit - GMToday.com

Best Choline Supplements for a Daily Habit GMToday.com

Whole Foods Market8d ago

ONNIT Alpha Brain Nootropic Brain Supplement for Focus & Memory, 30 Count | IGEN Non-GMO Tested; L-Theanine, Alpha GPC & Vitamin B6; brain supplement for memory, focus & mental clarity, men & women - Whole Foods Market

ONNIT Alpha Brain Nootropic Brain Supplement for Focus & Memory, 30 Count | IGEN Non-GMO Tested; L-Theanine, Alpha GPC & Vitamin B6; brain supplement for memory, focus & mental clarity, men & women Whole Foods Market

Whole Foods Market11d ago

Active Pomegranate Acai Daily Energy Drink Mix Powder, 15 Servings | Alpha GPC, L-Theanine, Organic Green Tea Caffeine, Acetyl L-Carnitine, Zero Sugar, Keto Friendly, Gluten & BPA Free, Vegan - Whole Foods Market

Active Pomegranate Acai Daily Energy Drink Mix Powder, 15 Servings | Alpha GPC, L-Theanine, Organic Green Tea Caffeine, Acetyl L-Carnitine, Zero Sugar, Keto Friendly, Gluten & BPA Free, Vegan Whole Foods Market

Nutrition Insight20d ago

Thorne Creatine + Alpha-GPC users report focus & energy - Nutrition Insight

Thorne Creatine + Alpha-GPC users report focus & energy Nutrition Insight

PR Newswire22d ago

THORNE SETS A HIGHER STANDARD FOR SCIENCE-BACKED WELLNESS WITH NEW CREATINE + ALPHA-GPC CONSUMER RESEARCH SUPPORTING MENTAL AND PHYSICAL PERFORMANCE - PR Newswire

THORNE SETS A HIGHER STANDARD FOR SCIENCE-BACKED WELLNESS WITH NEW CREATINE + ALPHA-GPC CONSUMER RESEARCH SUPPORTING MENTAL AND PHYSICAL PERFORMANCE PR Newswire

Whole Foods Market25d ago

Winged Wellness Rise Up, Energy & Focus Gummies for Women, 60 Gummies | Daily Brain Boost Gummy Supplement with Natural Caffeine, Ashwagandha, B12, Nootropics Alpha-GPC & Lion’s Mane - Pineapple - Whole Foods Market

Winged Wellness Rise Up, Energy & Focus Gummies for Women, 60 Gummies | Daily Brain Boost Gummy Supplement with Natural Caffeine, Ashwagandha, B12, Nootropics Alpha-GPC & Lion’s Mane - Pineapple Whole Foods Market

Stack3dSep 21, 2026

Black Market Bulk Pump combines liquid glycerol and alpha-GPC - Stack3d

Black Market Bulk Pump combines liquid glycerol and alpha-GPC Stack3d

Whole Foods MarketAug 25, 2026

OLLY Laser Focus Gummy Supplement,* Ginseng Extract, Alpha GPC - 36 Count | Cognitive Support, A blend of Ginseng, Alpha GPC & B Vitamins, Gluten Free, No Synthetic Colors, No Synthetic Flavors - Whole Foods Market

OLLY Laser Focus Gummy Supplement,* Ginseng Extract, Alpha GPC - 36 Count | Cognitive Support, A blend of Ginseng, Alpha GPC & B Vitamins, Gluten Free, No Synthetic Colors, No Synthetic Flavors Whole Foods Market

§ 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.

Browse full supplier directory

§ 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.

§ 10 Questions

Alpha-GPC FAQ

What is Alpha-GPC?: Choline-delivery compound that raises brain choline and acetylcholine levels, commonly used as a nootropic. 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.
What is Alpha-GPC used for?: Reported uses include improved focus and memory in some studies and used in cognitive and athletic protocols. Evidence strength is rated Clinical — see the evidence section for detail.
How is Alpha-GPC dosed?: Commonly referenced dosing is 300 – 900 mg daily, administered Oral. This is educational reference only; consult a licensed clinician before use.
What are the side effects of Alpha-GPC?: Commonly reported side effects include gi upset, headache, and some observational data suggests possible stroke risk in long-term high use. This list is not exhaustive.
Is Alpha-GPC legal?: Sold as a dietary supplement. Quality varies widely by brand; prefer GRAS-designated products with third-party testing (e.g. Mitopure for Urolithin A). FDA status: Dietary supplement in the US..