Phosphatidylcholine
Also known as: lecithin, PC, soy lecithin, sunflower lecithin
Recommended Dosage
1200–2400 mg
Dietary choline source for acetylcholine synthesis and liver health. Sunflower lecithin is soy-free alternative.
Quick Facts
Evidence
Grade B
Studies
2
Interactions
1
Forms
1
Evidence Rating: Grade B — Moderate Evidence
Some RCTs with positive results, or strong observational evidence. More research may refine our understanding.
Interaction Warnings
Mild antagonism
Important Notes
- TMAO concern at high doses in cardiovascular-risk individuals
- High doses may cause fishy body odor
- Sunflower lecithin preferred for soy allergy
Clinical Evidence (2 studies)
Choline requirements and sources including phosphatidylcholine
Canty DJ & Zeisel SH (1994) — Nutr Rev
Established choline requirements and PC as key source
View on PubMedCholine in liver function and cognitive health
Radziejewska A et al. (2019) — Nutrients
Review of choline role in liver and cognition
View on PubMedAlternatives to Consider
These supplements target similar goals and may be worth considering alongside or instead of Phosphatidylcholine.
Magnesium L-Threonate
Grade BThe only magnesium form shown to cross the blood-brain barrier effectively. Promising for cognitive function and brain aging.
Phosphatidylserine
Grade BPhospholipid that supports cell membrane integrity in the brain. FDA-qualified health claim for cognitive decline. Reduces cortisol.
Huperzine A
Grade BPotent acetylcholinesterase inhibitor. Effective for memory but narrow therapeutic window — cycling and careful dosing required.
Related Supplements
Magnesium L-Threonate
Grade B — Moderate EvidenceThe only magnesium form shown to cross the blood-brain barrier effectively. Promising for cognitive function and brain aging.
Phosphatidylserine
Grade B — Moderate EvidencePhospholipid that supports cell membrane integrity in the brain. FDA-qualified health claim for cognitive decline. Reduces cortisol.
Huperzine A
Grade B — Moderate EvidencePotent acetylcholinesterase inhibitor. Effective for memory but narrow therapeutic window — cycling and careful dosing required.
L-Carnitine
Grade B — Moderate EvidenceAmino acid derivative critical for fatty acid transport into mitochondria. ALCAR crosses the blood-brain barrier for cognitive support. Good evidence for exercise performance and male fertility.
🧪 Get Your Personalized Stack
See how Phosphatidylcholine fits with your goals and current supplements — AI-powered, evidence-graded recommendations.
⚕️ Important Disclaimer
This information is for educational purposes only. It is not medical advice. Always consult a healthcare provider before starting any supplement regimen, especially if you take medications or have health conditions.
DoseGrade does not sell supplements and has no affiliate relationships with supplement manufacturers.