library.onepin.app/nattokinase Peptide Education Library
Education only, not medical advice 21+ Every dose is an example to finalize with a licensed provider
Cardiovascular Dietary supplementBacillus Subtilis Natto Fibrinolytic Enzyme

Nattokinase

Natto Extract · NSK-SD

2,000 FU daily – 2000 FU Oral 1-2x daily
Fermented Soybean ExtractCardiovascular Anti-Coagulant

Nattokinase is a fibrinolytic enzyme isolated from natto (fermented soybeans), a traditional Japanese food. Discovered by Dr. Hiroyuki Sumi in 1987. Active in breaking down fibrin clots - the same protein dissolved by tissue plasminogen activator (tPA) and other thrombolytic drugs.

Quick Start
Route
Oral capsule
Start low
2,000 FU daily Oral
Frequency
1-2x daily
Timing
With or without food

Starting dose. 2,000 FU daily

Divided AM/PM preferred.

Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.

Tiered Protocols · lowest first
Conservative start
2,000 FU daily · Oral capsule · 1-2x daily
conservative starter
2,000 FU daily
1-2x daily
Standard
Fibrinolytic / Circulatory Support
2000 FU · Oral · Daily
human study · Kurosawa et al. 2015 (Sci Rep; PMID 26109079)
Fermented-soy enzyme dosed in Fibrinolytic Units (FU). 2000 FU is a standard daily dose.
2000 FU
Daily
01

How it works

Nattokinase has fibrinolytic activity:

Direct Fibrin Cleavage

Hydrolyzes fibrin in clots - same target as tPA but oral bioavailability allows daily prevention rather than acute thrombolysis.

Fibrinogen Reduction

Lowers serum fibrinogen levels - reduces clot-formation potential.

Plasmin Activation

Indirectly enhances endogenous fibrinolytic system.

Blood Pressure

Modest BP reduction in clinical trials, mechanism unclear (possibly via ACE inhibition).

Acid Stability

More acid-stable than serrapeptase, but enteric coating still preferred for full activity.

02

What to expect

Early
Days 1–7

Days 1-14: subtle effects.

Mid
Weeks 2–4

Weeks 4-8: peak BP/fibrinogen reductions.

Later
Weeks 4–12

Long-term continuous use OK.

03

Evidence

HumanModerate
AnimalStrong
In-vitroPresent

Each reference below was re-fetched from its PubMed record, and the quoted sentence was confirmed to appear in that abstract and to support the claim it sits under. Follow any of them to read the source.

Evidence boundary from the checked abstract: No notable adverse events were reported in all studies due to intake of nattokinase.

No notable adverse events were reported in all studies due to intake of nattokinase.

Nattokinase Supplementation and Cardiovascular Risk Factors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Reviews in cardiovascular medicine · 2023 · PMID 39076715

Evidence scope. This entry supports only the exact statement quoted from the live abstract; it does not independently verify OnePin's displayed dose, route, frequency, formulation, population, or broader mechanism.

Claims we could not support

No abstract we checked supports these for this molecule at this route. That is not the same as saying they are false — it marks where the evidence is missing.

Dose/route: 2,000 FU daily; Oral capsule; 1-2x daily. No checked live PubMed abstract verified this exact displayed dose, route, and frequency for the same molecule/formulation and relevant population.

Primary safety claim: No primary safety text present in source JSON. No checked live PubMed abstract directly verified this source-JSON safety claim at the displayed formulation, route, and regimen.

04

Side effects & safety

Commonly reported

  • Mild GI

Less common & notes

  • MAJOR BLEEDING RISK with anticoagulants/antiplatelet drugs.
  • Soy allergy cross-reactivity.
  • Mild hypotension at high doses.
05

Pharmacokinetics

Illustrative plasma concentration · 31 h
Half-life
~6-8 hours

Plasma

Peak · Tmax
2-4 hours

Post-ingestion

Elimination

Days for cumulative cardiovascular effects

Bioavailability

Oral moderate (~30-50%)

Duration of action

Daily dosing for sustained effects

Clearance

Hepatic

Storage. Capsule. Cool dry location, refrigerate for extended storage.

06

Regulatory status

Dietary supplement (US, DSHEA). Functional food in Japan.

Put it to work

Calculate, log & track

Open Nattokinase straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.

Open Nattokinase in the app →

Go deeper

The guide & community

The complete Nattokinase walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.

Join the community ↗
Open in app Community

Track it in OnePin. Log vials, draws, and protocols in the app.