The short version

Beetroot’s benefit comes from dietary nitrate (which the body turns into nitric oxide), and the effect tracks nitrate dose — not milligrams of “beet powder.” Nitrate modestly lowers blood pressure and can improve exercise endurance, but only at doses that greens/reds blends almost never reach.

The label test: look for nitrate stated in mg or mmol — which it rarely is. A proprietary blend listing “beet root powder” without nitrate content is selling a nitric-oxide story, not a studied dose.

What it actually is

Beetroot is a vegetable naturally rich in inorganic dietary nitrate, and in supplements it appears as beet root powder, juice or concentrated “beet shots.” Its main studied active is nitrate, not the pigment or fiber.

The mechanism is the nitrate → nitrite → nitric oxide pathway: bacteria on your tongue reduce nitrate to nitrite, which converts to nitric oxide, which relaxes and widens blood vessels and can improve the efficiency of muscle oxygen use. That’s why nitrate is studied for both blood pressure and exercise.

The critical, usually-hidden variable is actual nitrate content, which varies enormously by form and growing conditions. Concentrated shots used in trials are standardized to deliver roughly 400 mg (about 6.4 mmol) or more of nitrate; plain beet powder in a blend delivers far less, and the nitrate content is almost never disclosed. Two products both listing “beet root powder” can differ by an order of magnitude.

What the research actually shows

We label each use by how strong the evidence is — well-established, mixed, or weak/preliminary — and say plainly where marketing outruns the science.

Mixed Blood pressure. A GRADE-assessed meta-analysis in hypertensive patients found beetroot nitrate lowered systolic blood pressure by roughly 5 mmHg (no significant diastolic effect) — moderate-quality, more consistent in people with elevated pressure, and dose-dependent.

Mixed Exercise performance. Dose-response work shows a threshold: ~4.2 mmol nitrate did nothing, while ~8.4 mmol improved time-to-exhaustion by ~12–14%. Real but small and variable, largest in recreational (not elite) athletes.

Weak / preliminary Beet powder in a greens/reds blend. The nitrate dose in a typical blend is usually far below the ~400 mg/day used in trials, so the ingredient being present doesn’t mean an effective dose is present.

The doses studies actually used

For blood pressure, trials used roughly 70–250 mL of beetroot juice per day, commonly standardized to about 6.4 mmol (~400 mg) nitrate/day over days to weeks. For exercise, an acute dose of about 8.4 mmol (~520 mg) nitrate taken 2–3 hours beforehand improved endurance, while ~4.2 mmol was ineffective; higher doses added little.

One conversion worth memorizing: 1 mmol nitrate ≈ 62 mg. Typical greens-blend beet powder amounts fall far below these nitrate levels — which is the whole reason to look for nitrate content rather than beet-powder weight.

What to look for on a label

✓Nitrate content stated in mg or mmol — the number that actually predicts an effect ✓Standardized concentrated juice/shots for performance or BP goals ✓A dose in the studied range (~400 mg nitrate/day for BP; ~8.4 mmol pre-exercise) ✓Amounts disclosed, not folded into a proprietary blend total
✕“Beet root powder 600 mg” with no nitrate figure — trivial and uninformative ✕A proprietary blend hiding the beet amount inside a combined total ✕A “nitric oxide” benefit implied from a sprinkle of powder ✕Heavily processed beet powder used for color/flavor that may retain little nitrate

Where you’ll find it in what we’ve reviewed

Beet root is exactly the kind of ingredient our greens and “reds” reviews scrutinize. It appears in Earth Energy Raw Reds and Earth Energy Fruits & Veggies (which discloses beet root at 100 mg — honest, but far below studied nitrate doses; common-ownership disclosed), as well as blends like AG1 and Primal Greens.

The lesson repeats across the greens & produce roundup: a disclosed beet amount is better than a hidden one, but even disclosed, blend-level beet powder isn’t a nitrate dose.

Frequently asked questions

Does beet powder in a greens blend lower my blood pressure?

Probably not meaningfully — the nitrate dose in a blend is usually far below the ~400 mg/day used in trials. The effect tracks nitrate, and blends rarely disclose or reach it.

Is beetroot juice better than beet powder?

For the studied effects, standardized concentrated juice or shots reliably deliver the nitrate doses that powders often don’t.

How fast does it work for exercise?

Trials dose about 2–3 hours before exercise; effects are acute and modest, and larger in recreational athletes than elites.

Is more always better?

No — above roughly 8.4 mmol nitrate, studies show little additional benefit.

Sources

  1. Beetroot nitrate and blood pressure — systematic review/meta-analysis (Frontiers in Nutrition, 2022): ~5 mmHg systolic, moderate GRADE. pubmed.ncbi.nlm.nih.gov/35369064/
  2. Wylie et al., J Appl Physiol (2013) — nitrate dose-response for exercise; 8.4 mmol threshold. journals.physiology.org/doi/full/10.1152/japplphysiol.00372.2013
  3. Umbrella review of 20 systematic reviews — nitrate & exercise performance (2024). pmc.ncbi.nlm.nih.gov/articles/PMC12106159/
  4. Dose-response BP/vascular meta-analysis, Nutrition Journal (2025). link.springer.com/article/10.1186/s12937-025-01114-8

This explainer describes what research has examined — it is not medical advice and does not prescribe. Talk to your clinician before starting any supplement, especially alongside medication. Medical disclaimer.