Nattokinase
Natto protease: Fibrin ↓, thrombolysis ↑, platelet ↓; preclinical anti-metastatic rationale in ovarian/colorectal/prostate/lung.
Forms: Capsules (2000-4000 FU) · Enteric-coated tablets for stability
Key Takeaway
Clot-dissolving protease from natto that degrades fibrin and enhances plasmin activity, potentially disrupting platelet–fibrin cloaking that aids metastasis. Oncology data are mostly preclinical; bleeding risk is the major clinical concern.
Evidence at a glance
Robust CV thrombolytic trials; oncology confined to preclinical CTC/metastasis models; no dedicated RCTs; inferential from fibrin role in seeding.
- https://www.sciencedirect.com/science/article/abs/pii/S0024320524005253
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6043915/
- https://www.researchgate.net/publication/385518634_Nattokinase_and_Cancer_Exploring_the_Potential_of_a_Traditional_Japanese_Enzyme_in_Modern_Oncology
- https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.994961/full
How it may work
Nattokinase (subtilisin-like serine protease) directly cleaves fibrin and increases endogenous fibrinolysis (plasmin generation), while modestly inhibiting platelet aggregation and improving microcirculation. By dismantling fibrin/platelet scaffolds, it might reduce tumor cell adhesion and vascular trapping; however, controlled human oncology trials are scarce.
Targets & pathways
Curated mechanistic targets reported for this agent — how it may act on cells, not proof of a clinical effect.
- Fibrin↓Direct cleavage and plasmin enhancement
- Thrombolysis↑Clot dissolution and microcirculation improvement
- Platelet↓Aggregation inhibition
- Metastasis Support↓Fibrin/platelet cloaking disruption
Often studied / combined with
Combinations reported in the literature, not a protocol or a recommendation.
- Cisplatin: Mitigates vascular complications in ovarian therapy.
- Curcumin: Additive fibrin/platelet effects in colorectal models.
- Resveratrol: Cooperative anti-thrombotic in prostate cancer.
- Quercetin: Enhanced CTC disruption in lung preclinical.
Overlapping mechanisms
- Fibrinolysis: Overlaps with lumbrokinase/serapeptase; bleeding additive.
- Platelet ↓: Redundant with aspirin/omega-3; monitor hemostasis.
Safety & interactions
Severity and how well-established each signal is are shown separately. Verify everything with your oncologist or pharmacist — absence here does not mean safe.
- anticoagulantsContraindicateHighTheoreticalSynergistic bleeding risk (e.g., warfarin, DOACs).
- antiplateletsCautionHighTheoreticalAdditive effects (e.g., aspirin, clopidogrel).
- CisplatinSynergizeLowTheoreticalReduces treatment-related thrombosis.
Timing
- Empty-stomach: Maximizes absorption and activity.
- BID: Divided for steady fibrinolysis.
References
- DOI 10.1016/j.lfs.2024.122786: Nattokinase fibrinolytic mechanisms
- PMC6043915: Cardiovascular and thrombolytic effects
- 385518634: Nattokinase in cancer metastasis
- DOI 10.3389/fphar.2022.994961: Platelet aggregation inhibition
- DOI 10.3390/nu13082654: Synergy with cisplatin in ovarian models
- PMC10221542: Combination with curcumin in colorectal cancer
Research
No published studies for Nattokinase yet
New studies appear here once they’ve been reviewed. Browse all studies.
Dose: as studied, not a recommendation
Ranges seen in adjunct / practice use: 2000–4000 FU/day (po) divided doses; empty stomach, Cardio 2000 FU/day; adjunct 2000-4000 FU; enteric-coated for GI stability; cycle if bleeding concerns..
Trials studying Nattokinase
No actively-recruiting trials matched right now. Recruiting is not the same as proven. Search ClinicalTrials.gov →