PlainPill

Nattokinase

People mainly take Nattokinase for heart & lipids, immunity, libido. Based on 25 first-hand reports and 2 meta-analyses & systematic reviews in the medical literature. Ranked #662 of 1,974 overall.

23
User score
Mostly positive
16% positive0% mixed0% negative84% unclear

Of reports that state an outcome, 100% are positive.

Clinical research
BModerate research base
2
meta-analyses
8
RCTs
332
papers

What Nattokinase does, according to users

Of the people who reported each effect, the share who said it got better.

2 more with fewer than 3 reports
betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

BModerate research base

At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.

Rev Cardiovasc Med · 2023 · Meta-analysis / systematic review
Nattokinase Supplementation and Cardiovascular Risk Factors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Conclusion: This study further supports that nattokinase can be used as an effective adjunctive therapy for hypertension, but relatively low-dose supplementation of nattokinase may have no significant lipid-lowering effect. More work will need to be done to determine whether the positive efficacy of nattokinase on cardiovascular risk factors is dose-dependent.

PubMed 39076715 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

8000 FUper day
200 mgdaily
100mgas reported
500 mgdaily
2000 FUdaily

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“Check out Nattokinese.”
Source discussion ↗
“The nattokinase and serrapeptase are intended to clean up my fibrolynic system”
Source discussion ↗
“I've been taking K2, Magnesium and Nattokinase to combat heart calcifications”
Source discussion ↗
“nattokinase 8000fu per day has been extremely helpful in battling what I think was covid damage”
Source discussion ↗
“nattokinase + serrapeptase”
Source discussion ↗
Top discussions (5)

Other options for heart & lipids

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate