Dietary nitrate (beetroot) vs Nattokinase
Two supplements aimed at blood pressure and blood flow. One has a mapped mechanism and a measurable effect; the other carries a bleeding risk.
Dietary nitrate (beetroot)
Beet juice, beetroot powder
A well-mapped NOS-independent route to nitric oxide with a genuine ~4–5 mmHg systolic effect and a small endurance benefit in recreationally trained people — but nothing in elite athletes, no hard outcomes, and an effect antibacterial mouthwash can abolish.
Full Dietary nitrate (beetroot) evidence reviewNattokinase
Small human trials show modest blood-pressure and fibrinolytic-marker effects, but they're small/industry-linked with no hard outcomes — and there is a real bleeding risk, especially with anticoagulants.
Full Nattokinase evidence reviewSide by side
| Dietary nitrate (beetroot) | Nattokinase | |
|---|---|---|
| Marketed for | Blood pressure, nitric oxide / blood flow, endurance | Circulation, clot support |
| Evidence grade | Clinical data | Clinical data |
| Family | mTOR & other | Metabolic / AMPK |
| Key human source | Siervo 2013 meta-analysis, J Nutr | BP RCT, Hypertens Res 2008 |
marks a row where the two differ. Evidence grades come from our evidence matrix, which grades each molecule on the human data for the use it is marketed for.
Our verdict
Dietary nitrate is the better-characterized of the two: a well-mapped NOS-independent route to nitric oxide with a genuine ~4-5 mmHg systolic effect and a small endurance benefit in recreationally trained people — though nothing in elite athletes, no hard outcomes, and an effect antibacterial mouthwash can abolish. Nattokinase's small human trials show modest blood-pressure and fibrinolytic-marker effects, but they are small, often industry-linked and without hard outcomes, and it carries a real bleeding risk, especially alongside anticoagulants. Neither has an outcome trial, and they have not been compared.
Dietary nitrate (beetroot) fits if
Blood pressure and exercise performance are the target, and you want the option with a clearer mechanism and no bleeding signal.
Nattokinase fits if
The fibrinolytic angle is what interests you, you take no anticoagulant, and you have cleared it with a clinician first.