howtosupplement
Cognition/Performance

Alpha-GPC

Choline compound that crosses the blood-brain barrier and may improve cognition in dementia patients while offering modest acute performance effects.

Alpha-GPC

Alpha-GPC

56
score
B
evidence
Caution
risk
Quick Take

Strongest evidence is for age-related cognitive decline; benefits for healthy adults are modest and inconsistent.

Alpha-GPC is a choline-containing phospholipid found in small amounts in dairy, wheat germ, and organ meats. It readily crosses the blood-brain barrier and delivers choline for acetylcholine and phosphatidylcholine synthesis. In clinical trials, it has shown modest improvements in cognitive symptoms among people with Alzheimer's disease and vascular dementia. Some evidence suggests small acute benefits on attention and power output in healthy adults, though replication is limited. Those most likely to benefit are older adults experiencing cognitive decline and younger adults seeking short-term

Proven Benefits

01
Improves cognition in dementia
02
May support stroke recovery
03
May enhance memory and focus
04
May increase power output

Protocol

Amount
300-600 mg
Frequency
Once or twice daily
When
Morning or pre-workout for acute effects; with food if stomach upset occurs.

Onset Time

4-12 weeks for dementia cognition; acute focus effects within 30-60 minutes.

Who Should Consider

Adults with mild cognitive impairment or dementia
Healthy adults seeking acute focus or power enhancement
Athletes interested in short-term strength output
Older adults with vascular cognitive concerns

Food Sources

  • Organ meats like liver and kidney (trace amounts)
  • Soy lecithin (low concentration)
  • Dairy and wheat germ (minimal amounts)

How It Works

Alpha-GPC increases choline availability in the brain, which serves as a substrate for acetylcholine synthesis in neurons and phosphatidylcholine in cell membranes. By supporting cholinergic neurotransmission, it may counteract the deficits seen in neurodegenerative diseases. It also appears to transiently elevate growth hormone secretion through cholinergic stimulation of the pituitary, though th

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