Inflammation/Digestion/Heart

Phosphatidylcholine

Phospholipid found in cell membranes that supports gut barrier integrity and liver health, primarily studied in people with inflammatory bowel disease or fatty

Phosphatidylcholine

Phospholipid found in cell membranes that supports gut barrier integrity and liver health, primarily studied in people with inflammatory bowel disease or fatty

score

evidence

Safe

risk

Proven Benefits

01Reduces liver enzymes in NAFLD

02Supports gut barrier in colitis

03May lower LDL cholesterol

04May reduce liver fibrosis markers

05May lower homocysteine

Chemical Forms

Recommended

Polyenylphosphatidylcholine (PPC)
Phosphatidylcholine from sunflower lecithin
Phosphatidylcholine from soy lecithin

Avoid

Generic 'lecithin' with undisclosed PC content (variable potency)

Expert Note

Polyenylphosphatidylcholine (PPC) is the form most studied for liver and intestinal conditions, containing a high proportion of dilinoleoylphosphatidylcholine. Standard lecithin powders contain only 10-20% phosphatidylcholine and have less targeted evidence. Sunflower-derived PC offers a soy-free alternative for those with soy sensitivity, with comparable phospholipid content.

Protocol

Amount

900-1800 mg

Frequency

Once or twice daily

When

With meals to improve absorption and reduce gastrointestinal discomfort.

Condition-Based Dosing

Non-alcoholic fatty liver disease (NAFLD)

1350-1800 mg of polyenylphosphatidylcholine daily, divided into 2-3 doses.— Monitor liver enzymes (ALT/AST) at 8-12 weeks; continue only if improvement is observed.

Ulcerative colitis maintenance

1.5-3 g phosphatidylcholine daily, often as delayed-release formulation.— Use under gastroenterologist supervision; evidence is formulation-specific.

General choline repletion

900 mg phosphatidylcholine daily (~120 mg choline).— Provides roughly 15% choline by weight; consider direct choline sources if higher doses are needed.

Safety & Limits

Upper Safe Limit

No established UL; doses up to 18 g/day of lecithin have been studied without serious adverse effects, though 3-5 g/day is typical.

Cycling

Safe for continuous use

Contraindications

Soy allergy — many PC supplements are soy-derived

Trimethylaminuria — choline moiety can be metabolized to trimethylamine, worsening body odor

Synergies

Omega-3

Marine omega-3s and phosphatidylcholine both support hepatic phospholipid metabolism and have been co-studied in fatty liver protocols.

Avoid Combining With

✕Anticholinergic medications (theoretical opposition to cholinergic effects, though clinical significance with oral PC is low)
✕Chronic heavy alcohol use (depletes hepatic phospholipids and may increase requirement, but also impairs absorption)

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