Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Nattokinase | TUDCA (Tauroursodeoxycholic Acid) | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 2000-4000 FU (fibrinolytic units) daily, equivalent to 100-200mg | 250-500mg daily |
| Timing | On empty stomach, between meals or before bed. Morning and evening split dosing for 24-hour fibrinolytic coverage. | 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 | moderate_human | Moderate-Strong |
Nattokinase is a fibrinolytic serine protease extracted from natto (fermented soybeans). It directly degrades fibrin (the structural protein of blood clots) through four mechanisms: direct fibrinolysis, enhancement of endogenous tPA (tissue plasminogen activator) production, conversion of prourokinase to urokinase, and degradation of PAI-1 (plasminogen activator inhibitor-1). It also reduces blood viscosity and may inhibit ACE (angiotensin-converting enzyme), providing mild antihypertensive effects.
2000-4000 FU (fibrinolytic units) daily, equivalent to 100-200mg
On empty stomach, between meals or before bed. Morning and evening split dosing for 24-hour fibrinolytic coverage.
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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