The Library · Vol. 01Entry No. 25· Chapter 03

Alpha-GPC

L-Alpha-glycerylphosphorylcholine

The most bioavailable form of choline, crossing the blood-brain barrier efficiently. Alpha-GPC directly increases acetylcholine synthesis, the neurotransmitter essential for memory, learning, and muscle contraction.

1
Active compounds
3
In our products
03
Nootropics & Brain
Alpha-GPC (L-Alpha-glycerylphosphorylcholine)

L-Alpha-glycerylphosphorylcholineBotanical illustration

§ 1The molecules

Active compounds.

1 compound · 3 statements

No.01

Alpha-GPC

Why this matters

  • № 01Most bioavailable choline source — crosses the blood-brain barrier*
  • № 02Directly supports acetylcholine synthesis for memory and learning*
  • № 03Supports growth hormone release and athletic performance*

*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

§ 3Where it lives

Find Alpha-GPC in

3 products

Cognition Boost
Cognition Boost
100 mgBelow cycling threshold
$22.42$29.90
Focus Powder (Sour Grape)
Focus Powder (Sour Grape)
300 mgAbove cycling threshold
$29.92$39.90
Mushroom Energy Cognition Drops
Mushroom Energy Cognition Drops
25 mgBelow cycling threshold
$16.42$21.90
From the Library · Vol. 01

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Every compound in your stack — sourced, dosed, and cited. No proprietary blends. Browse the science behind the bottles.

125Ingredients
189Compounds
14Chapters
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Compounds that support cognitive function.Showing 2 of 2 · View all
Bacopa
№ 17 · CH.03

Bacopa

Bacopa monnieri

An ancient Ayurvedic herb known as 'Brahmi', used for thousands of years to enhance memory and learning.

Bacosides
Chinese Club Moss
№ 18 · CH.03

Chinese Club Moss

Huperzia serrata

A primitive, slow-growing moss native to mountain forests of China and Southeast Asia, used in Traditional Chinese Medicine for centuries.

Huperzine A

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From the Journal

Keep reading.

Journal · acetylcholine
Mar 17, 2026

Alpha-GPC: The Choline Source That Actually Reaches Your Brain

Not all choline sources cross the blood-brain barrier equally. Choline bitartrate mostly feeds the liver. CDP-choline is better. Alpha-GPC bypasses the saturable choline transporter entirely by entering the brain via the phospholipid transport system — a different, higher-capacity pathway. This article maps the choline source hierarchy, the ACh synthesis cycle, and why pairing Alpha-GPC with Huperzine A creates one of the most mechanistically complete nootropic stacks available.

Read article→

— End of entry

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