Supplements
Beetroot supplements: food forms, nitrate content, blood pressure, exercise outcomes and nitrite hazards
On this page
Beetroot supplements are concentrated preparations of the beet plant, sold as juices, shots, powders and other products. Much performance research concerns their inorganic nitrate content. Nitrate can enter a pathway that increases nitric oxide, a signaling molecule involved in blood-vessel relaxation and muscle function. The amount of beetroot on a label is therefore a different measurement from the amount of nitrate tested in a trial.[1]
Separate the plant, preparation and nitrogen compounds
| Form or concept | What it means | Boundary for interpreting research |
|---|---|---|
| Whole beetroot / food | A vegetable in a food matrix | Ordinary foods need not provide a standardized nitrate exposure[1] |
| Juice / concentrated shot | Different liquid volumes can deliver similar measured nitrate | Volume alone does not define the active exposure[3] |
| Powder / mixed beverage | Dried or blended beet preparation | Product weight is not a reliable nitrate assay[2] |
| Nitrate-depleted juice | A research comparator with nitrate removed | Keeps other juice features while testing nitrate contribution[4] |
| Nitrate versus nitrite | Different compounds in a conversion pathway | Nitrite salts can cause dangerous methemoglobinemia[1] |
Why a beetroot label cannot predict nitrate exposure
Gallardo and Coggan tested 45 lots of 24 products from 21 companies, including powders, mixed beverages, concentrates and bulk juices. Nitrate per serving differed roughly 50-fold between products. Even lots of the same product varied, with an average coefficient of variation around 30%. Only five products consistently supplied at least 5 mmol nitrate per serving. This was a composition analysis of sampled products, not a trial showing that every product above that amount improves performance. A current brand or batch cannot be assumed to match these historical measurements.[2]
Equal nitrate does not make all preparations equivalent
A crossover experiment in ten healthy men compared concentrated juice, a larger volume of nonconcentrated juice and a solid beetroot flapjack, each supplying approximately 5.76 mmol nitrate. The preparations differed in nitrate handling and blood-pressure responses. The food vehicle is therefore a relevant part of the exposure. A small acute experiment in healthy men cannot establish which commercial powder, juice or ordinary food is best for hypertension or long-term health. Matching a study requires both measured nitrate and the tested preparation, rather than matching only a color or vegetable name.[3]
Evidence & uncertainty
The question is specific to an outcome and a population. A 2024 review of 11 trials involving 349 adults with hypertension found lower clinic systolic pressure, but no significant improvement in clinic diastolic or 24-hour pressure outcomes. These findings concern measured pressure over limited follow-up; they do not show fewer strokes or that prescribed treatment can be replaced.[9]
Selected-source overview · Independent review pendingPublished questions
Does a large amount of beetroot powder guarantee a high nitrate content?
Selected-source overview · Independent review pending. Read the evidence context.
No. The product analysis found wide between-product and between-lot differences. Milligrams of powder and milligrams or millimoles of nitrate measure different things.[2]
Evidence behind this answer
- What Is in Your Beet Juice? Nitrate and Nitrite Content of Beet Juice Products Marketed to Athletes
original product composition analysis · 2019
Original indexed abstract or selected indexed full-text passages inspected on 2026-10-14 UTC; direct opening was attempted but returned a challenge or incomplete page; no independent full-text appraisal · 2019-07; 29(4):345–349; 45 lots, 24 products, variability and serving-level content
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Are a beetroot shot and a large glass of beetroot juice interchangeable?
Selected-source overview · Independent review pending. Read the evidence context.
Not automatically. A small food-form experiment matched nitrate amounts yet found different physiological responses. Volume and food matrix remain relevant.[3]
Evidence behind this answer
- Influence of dietary nitrate food forms on nitrate metabolism and blood pressure in healthy normotensive adults
original human crossover trial · 2018
Original indexed abstract or selected indexed full-text passages inspected on 2026-10-14 UTC; direct opening was attempted but returned a challenge or incomplete page; no independent full-text appraisal · 2018-01-30; 72:66–74; online 2017-12-06; ten men, matched nitrate and food forms
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Why do trials use nitrate-depleted beetroot juice as placebo?
Selected-source overview · Independent review pending. Read the evidence context.
It helps compare nitrate-rich juice with a similar juice lacking nitrate. The Kapil trial used this comparator rather than plain water.[4]
Evidence behind this answer
- Dietary nitrate provides sustained blood pressure lowering in hypertensive patients
original randomized controlled trial · 2014
Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal · 2014-11-24; Online publication; 2015 Feb issue, 65(2):320–327; abstract, methods and pressure results
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does raising nitrate and nitrite always lower blood pressure?
Selected-source overview · Independent review pending. Read the evidence context.
No. The 2024 treated older-adult trial increased these biomarkers without improving home or 24-hour pressure compared with placebo.[5]
Evidence behind this answer
- Increased nitrate intake from beetroot juice over 4 weeks affects nitrate metabolism, but not vascular function or blood pressure in older adults with hypertension
original randomized crossover trial · 2024
Original abstract and bibliographic record inspected on 2026-10-14 UTC; full text not inspected · 2024-04-22; 15(8):4065–4078; 15 treated participants, four weeks, biomarker and null vascular outcomes
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does lower aortic pressure immediately after juice prove all-day benefit?
Selected-source overview · Independent review pending. Read the evidence context.
No. The healthy-adult study found a brief aortic response without sustained 24-hour improvement. Timing and measurement site change the claim.[6]
Evidence behind this answer
- A Double-Blind Placebo-Controlled Crossover Study of the Effect of Beetroot Juice Containing Dietary Nitrate on Aortic and Brachial Blood Pressure Over 24 h
original randomized crossover trial · 2019
Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal · 2019; 10:47; abstract, methods and acute versus 24-hour results
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does lasting longer to exhaustion mean beetroot makes every race faster?
Selected-source overview · Independent review pending. Read the evidence context.
No. The umbrella review found an exhaustion benefit but no significant pooled time-trial improvement. Laboratory capacity and fixed-distance performance are distinct outcomes.[7]
Evidence behind this answer
- Dietary Nitrate Supplementation and Exercise Performance: An Umbrella Review of 20 Published Systematic Reviews with Meta-analyses
original umbrella review · 2025
Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal · 2025-03-14; 55:1213–1231; sections 2–3; review overlap, distinct outcomes and methodological limits
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Did a higher nitrate amount improve lifting in the 2025 dose comparison?
Selected-source overview · Independent review pending. Read the evidence context.
No. The selected resistance study found no performance difference at any tested amount, despite increased nitrate exposure. More exposure did not guarantee more benefit.[8]
Evidence behind this answer
- The effect of dietary nitrate supplementation on resistance exercise performance: A dose–response investigation
original randomized crossover trial · 2025
Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal · 2025-04-24; 125:2869–2883; 18 men, four exposure conditions, biomarker and performance results
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Can nitrite or fertilizer nitrate replace beetroot supplements?
Selected-source overview · Independent review pending. Read the evidence context.
No. Sports guidance warns against these substitutions and specifically identifies toxic methemoglobinemia risk from nitrite. Similar names do not imply equivalent safety.[1]
Evidence behind this answer
- Dietary Nitrate / Beetroot Juice
official sports nutrition guidance · Date not stated
Selected original official sports guidance passages inspected on 2026-10-14 UTC; no independent systematic appraisal · Undated; Current guidance; dated cited research through 2020; what it is, forms, oral pathway and concerns
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
One hypertension trial found a sustained short-term response
Kapil and colleagues randomized 68 adults with hypertension, half untreated and half taking medication, to nitrate-rich or nitrate-depleted beetroot juice for four weeks. The tested volume was 250 mL/day, a research description rather than a personal regimen. Placebo-adjusted 24-hour pressure fell by 7.7/5.2 mmHg; reported 95% intervals were 4.1–11.2 and 2.7–7.7 mmHg for the systolic and diastolic reductions. Home and clinic measures also improved. This phase 2 trial supports a physiological effect in its participants; four weeks cannot determine lifelong benefit, rare harms or protection against cardiovascular events.[4]
A later treated older-adult trial found no sustained benefit
A 2024 randomized crossover trial studied 15 men and women aged 56–71 with treated hypertension. Nitrate-rich juice supplied approximately 800 mg nitrate daily over four weeks, compared with nitrate-depleted juice. Plasma and saliva nitrate and nitrite rose, confirming a biological exposure, but home and 24-hour blood pressure and forearm vascular responses did not improve versus placebo. Its small sample leaves considerable uncertainty, yet the result directly challenges the assumption that increasing these biomarkers guarantees pressure reduction. Different ages, background medication, baseline physiology and protocols can affect applicability.[5]
An acute aortic result is not the same as all-day cuff pressure
In 15 healthy adults aged 22–40, a 2019 crossover study found that nitrate-rich juice lowered aortic systolic pressure at 30 minutes by 5.2 mmHg compared with placebo, with a 95% interval of 1.9–8.5 mmHg. Effects on arm pressure and arterial stiffness were minimal, and the aortic effect was not sustained across the subsequent 24 hours. This separates measurement site, timing and population: a brief central-pressure change in normotensive adults should not be presented as persistent treatment of hypertension.[6]
Exercise capacity and race-like performance are separate outcomes
A 2025 umbrella review included 20 reviews representing 180 unique studies and 2,672 participants. Its additional analyses found improved time to exhaustion, with a standardized effect of 0.33 and 95% interval 0.19–0.47. Time-trial performance did not improve: the estimate was −0.03, interval −0.14 to 0.09. Some muscular-endurance and peak-power outcomes improved, while muscular strength and maximal oxygen uptake did not. Most underlying reviews had substantial methodological weaknesses and shared studies. Many participants were men. Longer tolerance of an open-ended laboratory task does not guarantee a faster race or better performance for every athlete.[7]
More nitrate did not improve a specific resistance protocol
In 2025, 18 resistance-trained men completed a randomized crossover experiment comparing negligible nitrate with approximately 6, 12 and 24 mmol from beetroot juice. Nitrate levels increased, but countermovement jumps, back-squat performance and bench-press performance did not differ between conditions. The tasks used short sets at specified fractions of maximum strength. That result does not exclude benefit in a different endurance protocol, but it weakens the claim that increasing the exposure necessarily improves every type of lifting. Biomarker response and useful performance response must remain separate.[8]
Safety depends on the preparation and duration
Australian Institute of Sport guidance notes gastrointestinal discomfort and harmless temporary pink urine or stools after beetroot. It also states that chronic nitrate-supplement use has not been well studied. Its warning about confusing nitrate with nitrite is consequential: nitrite can interfere with hemoglobin’s oxygen carrying ability. Fertilizer or preservative salts are unsuitable substitutes for food products. Antibacterial mouthwash may blunt nitrate conversion, but this mechanism does not justify changing a prescribed dental treatment.[1]
Pooled results do not remove disagreement between measurements
The 2024 hypertension review estimated a clinic systolic reduction of 5.31 mmHg, with a 95% interval from 3.16 to 7.46 mmHg lower than placebo. Results varied between trials, and the authors identified uncertainty in the evidence. The lack of significant 24-hour effects matters because clinic and ambulatory pressure answer different questions. A favorable average does not predict an individual response or establish a safe way to combine a concentrated product with that person’s medicines. The selected literature does not provide a universal long-term supplement regimen.[9]
References
- Dietary Nitrate / Beetroot Juice
Official sports nutrition guidance
Australian Institute of Sport · Content/publication date: not stated
Accessed: 2026-10-14 UTC · Selected original official sports guidance passages inspected on 2026-10-14 UTC; no independent systematic appraisal
Cited sections: Undated; Current guidance; dated cited research through 2020; what it is, forms, oral pathway and concernsPage publication date not displayed; dated citations are not treated as the page update date.
- What Is in Your Beet Juice? Nitrate and Nitrite Content of Beet Juice Products Marketed to Athletes
Original product composition analysis
Gallardo and Coggan · Content/publication date: 2019
Accessed: 2026-10-14 UTC · Original indexed abstract or selected indexed full-text passages inspected on 2026-10-14 UTC; direct opening was attempted but returned a challenge or incomplete page; no independent full-text appraisal
Cited sections: 2019-07; 29(4):345–349; 45 lots, 24 products, variability and serving-level content - Influence of dietary nitrate food forms on nitrate metabolism and blood pressure in healthy normotensive adults
Original human crossover trial
McDonagh and colleagues · Content/publication date: 2018
Accessed: 2026-10-14 UTC · Original indexed abstract or selected indexed full-text passages inspected on 2026-10-14 UTC; direct opening was attempted but returned a challenge or incomplete page; no independent full-text appraisal
Cited sections: 2018-01-30; 72:66–74; online 2017-12-06; ten men, matched nitrate and food forms - Dietary nitrate provides sustained blood pressure lowering in hypertensive patients
Original randomized controlled trial
Kapil and colleagues · Content/publication date: 2014
Accessed: 2026-10-14 UTC · Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal
Cited sections: 2014-11-24; Online publication; 2015 Feb issue, 65(2):320–327; abstract, methods and pressure resultsOnline publication date precedes the 2015 issue date.
- Increased nitrate intake from beetroot juice over 4 weeks affects nitrate metabolism, but not vascular function or blood pressure in older adults with hypertension
Original randomized crossover trial
Fejes and colleagues · Content/publication date: 2024
Accessed: 2026-10-14 UTC · Original abstract and bibliographic record inspected on 2026-10-14 UTC; full text not inspected
Cited sections: 2024-04-22; 15(8):4065–4078; 15 treated participants, four weeks, biomarker and null vascular outcomes - A Double-Blind Placebo-Controlled Crossover Study of the Effect of Beetroot Juice Containing Dietary Nitrate on Aortic and Brachial Blood Pressure Over 24 h
Original randomized crossover trial
Kukadia and colleagues · Content/publication date: 2019
Accessed: 2026-10-14 UTC · Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal
Cited sections: 2019; 10:47; abstract, methods and acute versus 24-hour results - Dietary Nitrate Supplementation and Exercise Performance: An Umbrella Review of 20 Published Systematic Reviews with Meta-analyses
Original umbrella review
Poon and colleagues · Content/publication date: 2025
Accessed: 2026-10-14 UTC · Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal
Cited sections: 2025-03-14; 55:1213–1231; sections 2–3; review overlap, distinct outcomes and methodological limits - The effect of dietary nitrate supplementation on resistance exercise performance: A dose–response investigation
Original randomized crossover trial
Tan and colleagues · Content/publication date: 2025
Accessed: 2026-10-14 UTC · Selected original full-text definition, methods, results and discussion passages inspected on 2026-10-14 UTC; no independent systematic appraisal
Cited sections: 2025-04-24; 125:2869–2883; 18 men, four exposure conditions, biomarker and performance results - Effects of beetroot juice on blood pressure in hypertension according to European Society of Hypertension Guidelines: A systematic review and meta-analysis
Original systematic review
Grönroos and colleagues · Content/publication date: 2024
Accessed: 2026-10-14 UTC · Original indexed abstract or selected indexed full-text passages inspected on 2026-10-14 UTC; direct opening was attempted but returned a challenge or incomplete page; no independent full-text appraisal
Cited sections: 2024-06-26; Online publication; 2024 Oct issue, 34(10):2240–2256; 11 trials, clinical versus ambulatory results
Scope & review
- Population
- Source-specific adult participants; findings do not establish general use in pregnancy, breastfeeding or children
- Exposure or intervention
- Whole beetroot, nitrate-rich or nitrate-depleted juice, concentrates, powders and matched food-form experiments
- Comparison
- Source-specific placebo, dietary form or alternative formulation; mechanisms and biomarkers are separated from patient-important outcomes
- Outcomes
- Form and nitrate content, blood-pressure measurement, exercise capacity versus performance and safety
- Timeframe
- Each experiment retains its stated follow-up; hours, weeks, months and observational years answer different questions
- Jurisdiction
- Selected international original research, original reviews and explicitly dated official assessments; product rules vary by jurisdiction
Selected-source educational explanation. Official guidance, original study findings and editorial interpretation are distinguished. No exhaustive search, independent systematic synthesis or qualified medical review has been completed.
Sources checked on their individual access dates. Selected sources were checked; ongoing surveillance and qualified review have separate statuses on the coverage page.
Revision history
- 2026-10-14 UTC: Added a bounded supplement guide with form distinctions, contrary findings and source-access limits; qualified review remains pending.
What this article still leaves open
- Which formulations reliably deliver measured nitrate in present-day batches?
- Do longer trials show patient-important cardiovascular outcomes or sustained benefit in treated hypertension?
- How do effects and long-term safety differ in women, children, pregnancy and specific disease populations?
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