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 ↗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.
Of reports that state an outcome, 100% are positive.
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
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
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.
Conclusion: Together, such efforts support the objectives of the COST Action PIMENTO (CA20128) in building a more robust evidence base on fermented foods and health. The protocol for this systematic review was registered with the Open Science Framework (OSF; registration ID: vg7f6; https://osf.io/vg7f6).
PubMed 41256929 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“Check out Nattokinese.”
“The nattokinase and serrapeptase are intended to clean up my fibrolynic system”
“I've been taking K2, Magnesium and Nattokinase to combat heart calcifications”
“nattokinase 8000fu per day has been extremely helpful in battling what I think was covid damage”
“nattokinase + serrapeptase”
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