Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Omega-3 (EPA/DHA) | TUDCA (Tauroursodeoxycholic Acid) | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 2-4g combined EPA/DHA daily (targeting 2:1 EPA:DHA ratio for inflammation; 1:1 for cognitive) | 250-500mg daily |
| Timing | With meals containing fat for absorption. Split dose AM/PM. | With meals for liver support. Some protocols recommend before meals to prime bile flow. |
| Cycle Duration | ongoing | Cycle 4-8 weeks for liver support; ongoing at low dose for chronic liver conditions under supervision |
| Evidence Level | strong_human | Moderate-Strong |
EPA and DHA incorporate into cell membrane phospholipids, modulating membrane fluidity and lipid raft signaling. EPA competitively inhibits arachidonic acid conversion via COX-2 and 5-LOX, reducing pro-inflammatory eicosanoids (PGE2, LTB4) while generating anti-inflammatory resolvins and protectins. DHA is critical for neuronal membrane integrity, modulating BDNF expression and synaptic plasticity via Nrf2 and NF-kB pathways.
2-4g combined EPA/DHA daily (targeting 2:1 EPA:DHA ratio for inflammation; 1:1 for cognitive)
With meals containing fat for absorption. Split dose AM/PM.
ongoing
TUDCA is a water-soluble bile acid conjugate (taurine + ursodeoxycholic acid) with potent hepatoprotective and cytoprotective properties. It inhibits the mitochondrial pathway of apoptosis by preventing BAX translocation to mitochondria and cytochrome c release. TUDCA reduces endoplasmic reticulum (ER) stress by acting as a chemical chaperone, assisting protein folding and reducing the unfolded protein response (UPR). It protects hepatocytes by stabilizing cell membranes, displacing toxic hydrophobic bile acids (chenodeoxycholic, lithocholic) from biliary epithelium, and promoting choleresis (bile flow). Additionally, it has neuroprotective effects via reduction of ER stress in neurons and modulation of the TGR5 bile acid receptor.
250-500mg daily
With meals for liver support. Some protocols recommend before meals to prime bile flow.
Cycle 4-8 weeks for liver support; ongoing at low dose for chronic liver conditions under supervision
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