Phosphatidylcholine is the body's main carrier of choline, a nutrient central to liver function and brain signaling. Its clearest value is correcting a choline shortfall, which can reverse fat buildup in the liver. Benefits for gut and liver inflammation, memory, and heart concerns remain mixed or unproven. Overall, a low-risk nutrient with an unsettled broader case. (Full Review)
| Marker | Target | Why |
|---|---|---|
| ALT | ~10–26 U/L (women), ~10–30 U/L (men) | Tracks liver-cell injury and fatty-liver response |
| AST | ~10–26 U/L | Complements ALT for liver stress |
| GGT | <20 U/L (women), <30 U/L (men) | Sensitive marker of liver and bile stress |
| Homocysteine | ≤7–8 µmol/L | Reflects methylation balance affected by choline supply |
| Fasting lipid panel | HDL-C >50 mg/dL; triglycerides <80 mg/dL | Detects any lipid effect and cardiovascular context |
| TMAO | Lower is better | Gauges the gut-metabolite pathway of concern at higher doses |
Cadence: Recheck at ~12 weeks after starting or changing dose, then every 6–12 months during continued use (every 3–6 months if liver disease or kidney impairment is present)