We use essential cookies (authentication, your saved goals/stack) by default. With your permission we'll also enable privacy-respecting analytics (Vercel Web Analytics, anonymous load-time metrics) and error-replay diagnostics (Sentry — DOM snapshots only when an error fires) so we can fix bugs faster. Learn more about cookies
Phosphatidylcholine (PC / Lecithin)
A major phospholipid and choline source used for liver support — but most human evidence is for polyenylphosphatidylcholine or silymarin-phospholipid COMBINATION products, not standalone phosphatidylcholine; standalone evidence is thin.
What the evidence says
Phosphatidylcholine doesn't have enough studies with structured effect-size data yet to pool a verdict. Browse the studies below for individual findings.
Most evidence is from medium-quality randomised trials published 2012–2016 with a typical study size of 179 participants.
Based on 2 studies · 2 RCTs · 179 total participants
Confidence
LowBy outcome
Phosphatidylcholine has an evidence score of 3.5/10 — emerging evidence based on 2 indexed studies. A major phospholipid and choline source used for liver support — but most human evidence is for polyenylphosphatidylcholine or silymarin-phospholipid COMBINATION products, not standalone phosphatidylcholine; standalone evidence is thin. Representative study: PMID 22343419.
The commonly studied dose of Phosphatidylcholine is Polyenylphosphatidylcholine ~1.8g/day (liver protocols); lecithin-derived PC varies. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
See full supplement plans that include Phosphatidylcholine.
Explore: Best supplements for Vitality & LongevityBest supplements for Focus, Memory & Mood
Last reviewed June 2026 · evidence from 2 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Phosphatidylcholine (PC) is the principal phospholipid in cell membranes and a dietary choline source (a key component of lecithin). It's used mainly for liver support, where polyenylphosphatidylcholine (PPC, e.g. Essentiale) and silymarin-phospholipid complexes have randomized evidence for improving liver markers in fatty liver disease. The honest caveat: most of that evidence is for COMBINATION products (PC + silybin/vitamin E), where the phospholipid largely improves absorption of the active — standalone phosphatidylcholine evidence is comparatively thin. It also supplies choline, relevant to cognition, but those claims are weaker.
A core structural phospholipid supporting hepatocyte membrane repair.
Provides choline for acetylcholine and methylation.
How Phosphatidylcholine works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Polyenylphosphatidylcholine ~1.8g/day (liver protocols); lecithin-derived PC varies
Take with food
| Form | Type |
|---|---|
| 💊Polyenylphosphatidylcholine (PPC) | Recommended |
| 💊Lecithin | Alternative |
Most evidence is combination/PPC, not standalone PC.
Minimum: 8 weeks
Optimal: 24 weeks
Cycling: Not required
Note: With meals.
Dose-response data unavailable. The current published research for Phosphatidylcholine does not provide sufficient dose-specific outcome data to generate reliable dose-response curves.
Refer to the Dosage & Timing section above for recommended dose ranges based on available evidence.
Improves liver enzymes/markers (mostly in combinations).
Supplies choline for membranes/neurotransmission.
Food/lecithin amounts fine; high supplemental doses less studied.
Few documented drug interactions.
Tip: Reduce dose; take with food
Tip: Reduce dose
The best time to take Phosphatidylcholine is with meals. Take it with food. Taken with meals; liver protocols use PPC, often within combination products.
Phosphatidylcholine is generally well-tolerated and considered safe for most healthy adults at recommended doses. The most commonly reported side effects are GI upset/diarrhea, fishy body odor (high lecithin). Use caution if any of these apply to you: Soy/egg allergy (source-dependent); Pregnancy/breastfeeding (supplemental doses).
Universal antioxidant that works in both water and fat, supporting blood sugar control, nerve health, and cellular energy.
Tap node to isolate • Pinch to zoom • Tap edge for research