Beetroot has quietly become one of the most studied performance supplements on the shelf — and one of the most misunderstood. Walk into any supplement shop and you'll see beetroot powders and "nitric oxide" boosters promising harder pumps, longer endurance, and lower blood pressure. Some of that is hype. A surprising amount of it is backed by real, repeatable science.
Here at The Fit Nerd, we care less about marketing and more about what the data actually shows. So we dug into the meta-analyses — the studies that pool dozens of trials together — to answer the questions that matter: Does beetroot actually make you faster? Does it lower blood pressure? And if it works, how much do you need and when should you take it?
The short version: beetroot is one of the few "natural" ergogenic aids with a genuine evidence base, but the effect is specific, modest, and easy to sabotage if you don't know the details. Here's what the research really says.
Why beetroot works: the nitrate-to-nitric-oxide pathway
Beetroot's active ingredient isn't a vitamin or a stimulant — it's dietary nitrate. When you drink beetroot juice, the nitrate is absorbed, concentrated in your saliva, and converted by bacteria on your tongue into nitrite. From there, your body can recycle nitrite into nitric oxide (NO), a molecule that relaxes and widens blood vessels.[1]
This matters because for decades scientists assumed nitrate and nitrite were inert waste products. We now know they form an alternative route to nitric oxide — one that becomes especially active when oxygen is low, such as during hard exercise.[1] More nitric oxide means better blood flow, more efficient oxygen delivery to working muscles, and potentially lower blood pressure at rest. That single mechanism explains why beetroot shows up in research on both athletic performance and cardiovascular health.
One quirky but important consequence: because the conversion depends on bacteria living in your mouth, antibacterial mouthwash can blunt beetroot's effects. Large reviews have found that practices harmful to oral bacteria measurably reduce the ergogenic benefit of nitrate.[2] If you're using beetroot for performance, skip the antiseptic mouthwash on training days.
Does beetroot improve exercise performance?
This is where beetroot earns its reputation — with caveats. The largest analysis to date pooled 123 randomized controlled trials covering more than 1,700 participants and found that inorganic nitrate produced a small but statistically significant improvement in exercise performance overall.[2] "Small" is the operative word: this is a marginal gain, not a transformation. But in endurance sport, marginal gains win races.
The same review revealed several patterns that explain why some people swear by beetroot and others feel nothing:
- The form matters. Beetroot juice and high-nitrate diets improved performance, while isolated nitrate salt supplements did not reach significance.[2]
- The event length matters. Benefits were strongest for efforts lasting roughly 2 to 10 minutes — think rowing pieces, middle-distance running, or hard cycling intervals.[2]
- Low-oxygen conditions amplify it. Nitrate was more effective in increasingly hypoxic (lower-oxygen) conditions, consistent with its mechanism.[2]
For pure sprint power, the picture is more mixed. A 2024 meta-analysis of high-intensity cycling sprints found that nitrate improved time-to-peak power but had no significant effect on mean power, peak power, or minimum power — and the authors urged caution given the limited data.[3] The honest takeaway: beetroot is better evidenced for sustained, oxygen-demanding efforts than for one-off explosive bursts.
Beetroot for recovery
A less-publicized benefit is recovery. A systematic review of trials measuring exercise-induced muscle damage found that nitrate-rich beetroot juice accelerated the recovery of muscle strength in the days after hard exercise, improved jump performance during recovery, and reduced muscle soreness.[4] It did not meaningfully change markers like creatine kinase or oxidative stress, so the effect appears functional rather than a blanket "anti-inflammatory."[4] The researchers were clear that more large-scale trials in trained athletes are needed before treating this as settled — but it's a promising, real signal.
What about blood pressure?
Beetroot's cardiovascular story is arguably stronger than its performance story. A 2024 meta-analysis focused specifically on people with hypertension found that beetroot juice lowered clinical systolic blood pressure by about 5.3 mmHg compared with placebo.[5] An earlier analysis of 22 trials reported reductions of roughly 3.5 mmHg systolic and 1.3 mmHg diastolic, with larger doses and longer use producing bigger drops — a clear dose-response relationship.[6]
But transparency cuts both ways. Several reviews note that the effect is most visible in clinic-style measurements and often does not reach significance on 24-hour ambulatory monitoring, which is the gold standard for everyday blood pressure.[7] The 2024 hypertension review also rated the overall certainty of evidence as low and saw no significant change in diastolic or 24-hour pressure.[5] So beetroot may be a useful adjunct, but it is not a replacement for prescribed blood-pressure medication. If you're managing hypertension, talk to your doctor before changing anything — we're a supplement company, not your physician.
How much beetroot, and when?
The dosing research is refreshingly specific. For an acute performance boost, the evidence points to roughly 5 to 15 mmol of nitrate (about 300 to 900 mg) taken at least 2 to 3 hours before exercise, which gives nitrite levels time to peak.[2] For ongoing use over days, a more moderate daily dose appears optimal.[2] On the blood-pressure side, daily nitrate intakes in the range of roughly 200 to 800 mg have been used in trials.[5]
| Goal | Approximate nitrate dose | Timing |
|---|---|---|
| Endurance / performance (acute) | ~5–15 mmol (≈300–900 mg) | 2–3 hours pre-exercise[2] |
| Performance (multi-day loading) | ~5–10 mmol/day | Daily for several days[2] |
| Blood pressure support | ~200–800 mg/day | Daily, consistent[5,6] |
A concentrated beetroot product makes this far easier than eating raw beets, because the nitrate content is standardized and you skip the bulk (and the staining). Our Beetroot is a simple, no-frills way to get a consistent daily dose — useful whether your goal is endurance training or general cardiovascular support. If your focus is squarely on training output, beetroot also stacks naturally with a pre-workout: our Power Powder (Fruit Punch) pairs the blood-flow benefits of nitrate with the energy and focus support most lifters want before a hard session.
Who is most likely to benefit?
Two groups see the clearest returns. First, recreational and sub-elite endurance athletes performing efforts in that 2-to-10-minute sweet spot — beetroot tends to help less-trained people more than highly trained elites, whose bodies already produce nitric oxide efficiently.[2] Second, people with elevated blood pressure, where the cardiovascular effect is most consistent.[5] If you're a casual gym-goer chasing a one-rep max, beetroot is unlikely to be your difference-maker. If you're grinding through intervals or watching your blood pressure, it's one of the better-evidenced options available.
Frequently asked questions
Will beetroot turn my urine pink?
It can. A harmless condition called beeturia turns urine and sometimes stool a reddish-pink color in some people. It's cosmetic and not a cause for concern.
Is beetroot a stimulant like caffeine?
No. Beetroot works through the nitrate-to-nitric-oxide pathway to improve blood flow, not by stimulating your nervous system.[1] It won't keep you awake and can be taken any time of day.
How long before I feel the effects?
For performance, nitrite levels in the blood generally peak a couple of hours after intake, which is why studies dose 2 to 3 hours before exercise.[2] Blood-pressure benefits build with consistent daily use over days to weeks.[6]
Can I just eat vegetables instead?
Yes — leafy greens and beets are rich in nitrate, and high-nitrate diets improved performance in the research.[2] A standardized beetroot product simply makes the dose consistent and convenient day to day.
Does mouthwash really cancel out beetroot?
It can reduce the benefit. Antibacterial mouthwash kills the oral bacteria that convert nitrate to nitrite, and reviews have found this blunts nitrate's performance effect.[2] Skip the antiseptic rinse on days you're relying on beetroot.
The bottom line
Beetroot isn't magic, and anyone who tells you it is hasn't read the studies. What it is, is one of a small handful of supplements with genuine, replicated evidence behind it — modest endurance gains in the right kind of efforts, faster strength recovery, and a real if measurement-dependent drop in blood pressure. Get the form right (juice or standardized powder, not isolated salts), dose it 2 to 3 hours before training, stay consistent, and lay off the antibacterial mouthwash. Do that, and beetroot becomes one of the more honest bets in your supplement stack.
Want a simple, standardized way to start? Our Beetroot takes the guesswork out of daily dosing, and pairs well with Power Powder on training days.
References
- Lundberg, JO, Weitzberg, E, Gladwin, MT. (2008). The nitrate-nitrite-nitric oxide pathway in physiology and therapeutics. Nature Reviews Drug Discovery, 7(2), 156-167. View source
- Silva, KVC, Costa, BD, Gomes, AC, Saunders, B, Mota, JF. (2022). Factors that Moderate the Effect of Nitrate Ingestion on Exercise Performance in Adults: A Systematic Review with Meta-Analyses and Meta-Regressions. Advances in Nutrition, 13(5), 1866-1881. View source
- Tan, R, Cass, JK, Lincoln, IG, Wideen, LE, Nicholl, MJ, Molnar, TJ, Gough, LA, Bailey, SJ, Pennell, A. (2024). Effects of Dietary Nitrate Supplementation on High-Intensity Cycling Sprint Performance in Recreationally Active Adults: A Systematic Review and Meta-Analysis. Nutrients, 16(16), 2764. View source
- Jones, L, Bailey, SJ, Rowland, SN, Alsharif, N, Shannon, OM, Clifford, T. (2021). The Effect of Nitrate-Rich Beetroot Juice on Markers of Exercise-Induced Muscle Damage: A Systematic Review and Meta-Analysis of Human Intervention Trials. Journal of Dietary Supplements, 19(6), 749-771. View source
- Grönroos, R, Eggertsen, R, Bernhardsson, S, Praetorius Björk, M. (2024). Effects of beetroot juice on blood pressure in hypertension according to European Society of Hypertension Guidelines: A systematic review and meta-analysis. Nutrition, Metabolism & Cardiovascular Diseases, 34(10), 2240-2256. View source
- Bahadoran, Z, Mirmiran, P, Kabir, A, Azizi, F, Ghasemi, A. (2017). The Nitrate-Independent Blood Pressure-Lowering Effect of Beetroot Juice: A Systematic Review and Meta-Analysis. Advances in Nutrition, 8(6), 830-838. View source
- Ashor, AW, Lara, J, Siervo, M. (2017). Medium-term effects of dietary nitrate supplementation on systolic and diastolic blood pressure in adults: a systematic review and meta-analysis. Journal of Hypertension, 35(7), 1353-1359. View source
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