Nitrate
Evidence: GoodUseful mainly for endurance athletes seeking efficiency and adults wanting modest blood-pressure lowering.
Quick decision guide
May help most
endurance athletes seeking efficiency and adults wanting modest blood-pressure lowering
Common dosing range
~300–600 mg nitrate (about 5–10 mmol) per dose
When to expect effects
2–3 hours acutely; days for blood pressure
Watch out for
Avoid antibacterial mouthwash, which blocks the oral bacteria needed to convert nitrate
What is it
Dietary nitrate is an inorganic ion found abundantly in beetroot and leafy greens and sold as supplements (often as beetroot extract or sodium/potassium nitrate). In the body it is reduced to nitrite and then nitric oxide, a signaling molecule that widens blood vessels and improves oxygen efficiency in muscle. It is the active component behind beetroot juice's effects on performance and blood pressure.
Is it worth it for you?
Use this as a quick fit check, not a diagnosis.
Worth considering if…
Probably skip if…
Evidence at a glance
| Goal | Evidence | Effect | Best fit | Time |
|---|---|---|---|---|
| endurance exercise performance | Good Evidence | Small but meaningful (~1–3% in time-trial) | recreational and sub-elite endurance athletes | Hours |
| blood pressure lowering | Good Evidence | ~3–5 mmHg systolic | adults with elevated or high-normal blood pressure | Hours acutely; sustained with daily use |
Evidence for 2 uses
AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.
endurance exercise performance
Supplement benefitMeta-analyses of randomized crossover trials show dietary nitrate improves exercise economy and time-trial or time-to-exhaustion performance, reducing the oxygen cost of submaximal exercise. The benefit is consistent but modest and tends to be smaller in highly trained athletes.
Bottom line: A reliable, modest ergogenic aid for endurance, strongest in non-elite athletes.
blood pressure lowering
Biomarker supportPooled randomized trials show inorganic nitrate (mainly via beetroot juice) lowers systolic blood pressure by roughly 3–5 mmHg, through nitric-oxide-mediated vasodilation. The effect is a blood-pressure biomarker change; long-term cardiovascular outcome data are limited.
Bottom line: Modestly lowers blood pressure, a biomarker effect without proven long-term outcome benefit.
How to take it
- Typical dose
- ~300–600 mg nitrate (5–10 mmol) per dose
- Timing
- 2–3 hours before exercise; for blood pressure, daily
- With food
- either, commonly as beetroot juice/extract
- How long to try
- single dose for acute performance; days to weeks for blood-pressure effect
What to track
- time-trial or endurance performance
- perceived exertion
- resting blood pressure
- harmless reddish urine/stool from beetroot pigments
Safety
Common side effects
harmless red urine or stool from beetroot pigment, mild GI upset
Who should avoid it
- infants (risk of methemoglobinemia)
- people advised to restrict sodium if using sodium nitrate forms
Pregnancy & breastfeeding
Beetroot foods are fine, but concentrated nitrate supplements lack pregnancy safety data; prefer dietary sources.
Interactions
additive vasodilation could lower blood pressure excessively
kills oral bacteria needed to convert nitrate to nitrite, blunting the effect
Choosing a product
Look for
- states nitrate content in mg or mmol per serving
- beetroot-based with standardized nitrate
- third-party tested for contaminants
Be skeptical of
- dramatic stamina or 'pump' guarantees
- implying it treats hypertension as a drug
- unquantified 'nitric oxide booster' marketing
References by claim
Track Nitrate with Pilora
Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.
Coming to App StoreDisclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.