THE JOURNAL / 25 Sep 2026
Beetroot nitrate: exercise evidence, dose and safety
Some nitrate-standardised beetroot preparations have produced small exercise effects in trials. Results vary, and highly trained athletes do not reliably respond. The amount of ...
Evidence reviewed: 25 September 2026. Research doses describe study methods; they are not personalised dosing instructions.
The short answer
Some nitrate-standardised beetroot preparations have produced small exercise effects in trials. Results vary, and highly trained athletes do not reliably respond. The amount of nitrate matters: beetroot powder weight, colour and a 'natural' label cannot establish equivalence to a studied preparation.
What it is
Beetroot contains inorganic nitrate alongside many other compounds. Products range from juice and concentrated shots to powders and extracts. Their nitrate content can differ substantially. Dietary nitrate is distinct from prescription nitrate medicines, although both are relevant to a medication review.
How it works: mechanism versus outcome
Oral bacteria help convert nitrate to nitrite, which can contribute to nitric-oxide formation. Researchers investigate effects on blood flow and the oxygen cost of exercise. A plausible pathway does not establish an improvement in every sport, and changes in physiological markers should be separated from race performance.[1]
Benefits: what the evidence can support
A large systematic review found a small overall effect on exercise performance, with considerable variation across protocols and participants. Effects depended on factors including exercise type and supplementation strategy. Separate analyses of muscle-performance outcomes also show why one broad 'performance' claim can conceal very different results.[1] [2]
Where evidence is mixed or weak
Not everyone responds. Baseline diet, fitness, oral bacteria and the actual nitrate dose may contribute to variation. Evidence from recreational participants cannot simply be transferred to elite athletes. Research on training adaptations is less established than research on acute exercise tests, and whole beetroot is not automatically equivalent to a standardised shot.[3]
Dosage and forms used in research
Studies often use nitrate in the region of 5–9 mmol per day, approximately 310–560 mg nitrate; protocols outside that range also exist. Report nitrate itself, not just grams of beetroot. Concentrated forms and unstandardised powders cannot be compared from scoop size alone.[1]
Timing and duration
Many acute protocols give nitrate a few hours before exercise; some use several days of intake. There is no universally optimal schedule. Antibacterial mouthwash can affect the nitrate–nitrite pathway, but do not stop prescribed oral care to imitate a sports study.
Side effects and safety
Beetroot may turn urine or stools red and can cause stomach upset. Unexpected or persistent bleeding-like changes still need assessment. People with low blood pressure, kidney disease or a history of certain kidney stones need individual advice about concentrated preparations. Pregnancy and child-specific sports supplementation evidence is limited.
Medicines and other supplements
Ask a pharmacist about blood-pressure medicines, prescription nitrates and other agents that lower blood pressure, particularly if combining supplements. This is a precaution about potentially additive effects, not proof that every combination is harmful. Avoid stacking several nitrate-containing sports products without knowing the total.
Common myths
All beetroot powders supply the same nitrate
Plant growing conditions and processing affect nitrate; a quantified amount is more informative than powder weight.
It works immediately like caffeine
The studied pathway and timing differ. A stimulant sensation is not expected or needed.
Frequently asked questions
Is beetroot juice useful before running?
Running studies vary by distance, fitness and protocol. A small average effect in a review is not a guarantee for an individual event.
How much beetroot powder equals a research dose?
That cannot be calculated without a reliable nitrate measurement for the product.
Should I avoid mouthwash?
Do not change prescribed dental care. The mouthwash issue helps explain research variability, rather than providing a reason to compromise oral health.
Find the relevant ALL TOLD product information
Use the final product label for ingredients, allergens and serving directions. A study of an ingredient is not a trial of an ALL TOLD product or combination. Product links identify the relevant catalogue entries; they do not establish equivalence to a research preparation.
Related research
Browse the Research ingredient index