Best Beetroot Supplement UK for Blood Pressure & Performance

About the author...

Will founded Supermushrooms after digging into the research behind mushroom and nootropic supplements. Every pick is checked against clinical dosing, extract standardisation, and real buyer reviews, and each star rating starts from a product's real Amazon score before being adjusted for formulation quality. Read more about how ratings are calculated.

The best beetroot supplement in the UK is currently Beet It Organic Concentrated Beetroot Shot, praised for stating its dietary nitrate content on the label at a dose that lines up with the research on blood pressure and exercise performance. See the comparison below for how five other well-reviewed alternatives stack up depending on your priorities.

Beetroot's benefits come almost entirely from one thing: dietary nitrate. Once swallowed, nitrate is concentrated in saliva and converted by bacteria on the back of the tongue into nitrite, which the body then reduces further into nitric oxide, a molecule that relaxes and widens blood vessels. This nitrate-to-nitrite-to-nitric-oxide pathway is distinct from the body's main route to nitric oxide (via the amino acid L-arginine) and becomes more active precisely when oxygen is scarce, which is why it matters both for resting blood pressure and for muscles working hard during exercise.¹ Two things tend to happen when nitrate intake rises: blood pressure edges down, and the oxygen cost of submaximal exercise drops, meaning the same effort feels or measures easier.²

The catch, and the reason this category needs closer scrutiny than most, is that "beetroot" on a label tells you almost nothing about how much nitrate you're actually getting. Nitrate content in raw beetroot varies several-fold depending on the cultivar, the soil, and growing conditions, and it can fall further during drying and powdering, the process most capsule and tablet products go through. A cold-pressed juice concentrate preserves nitrate far more reliably than a dried, milled powder pressed into a capsule. That is why the products below are judged first on whether they actually state a nitrate figure in milligrams, not just a beetroot extract or powder weight, since the latter is close to meaningless on its own for predicting whether you'll see a measurable effect.

Key Takeaways (TL;DR)

• The best evidence sits with products that state dietary nitrate content in mg, not just beetroot powder or extract weight.
• Clinical trials for blood pressure and performance commonly use around 300 to 400mg of nitrate daily, roughly one concentrated 70ml shot.
• Juice concentrates generally preserve more nitrate than dried, milled capsule or tablet powders.
• A stated extract ratio (such as 25:1 or 50:1) is not the same as a nitrate figure, and shouldn't be read as one.
• Blood pressure effects have been shown within days, while consistent exercise performance gains are usually assessed after one to two weeks of daily use.
• Manufacturing credentials (organic certification, UK-made, third-party testing) matter more when the active dose itself is unverified.
• Avoid antibacterial mouthwash around dosing times, since it kills the oral bacteria that convert nitrate into nitrite.

How We Choose

Every product here was assessed first on whether it discloses actual dietary nitrate content in milligrams, since that is the single figure that predicts whether a dose is likely to do anything, and weighted this most heavily against the roughly 300 to 400mg used in the strongest clinical trials. Extraction method, third-party testing, and UK manufacturing or certification credentials were scored next, followed by value relative to the other five products in this list. Nothing here was excluded purely for lacking a nitrate figure, since that omission is currently the norm rather than the exception in this category, but it is reflected honestly in the scoring.

Quick Comparison

Each product's overall rating starts from its real Amazon UK customer rating, then gets adjusted (up to ±0.5) for dose versus clinical research, declared nitrate content, manufacturing quality, and value. Click a product name to jump straight to its full review below.

Beet It Organic Concentrated Beetroot Shot, 300mg Nitrates, 70ml (Pack of 15)

Best Overall — Clinically-Dosed Nitrate Shot

based on 443 Amazon UK reviews (4.4★), adjusted for formulation quality

What We Love About the Clinically-Dosed Shot

Beet It is the one product in this list that removes the guesswork entirely. Each 70ml shot is labelled with an exact 300mg of dietary nitrates, a figure that sits close to the doses used in the blood pressure trials covered below. Made by James White, a UK juice producer that has supplied concentrate to researchers running trials on nitrate supplementation for over a decade, the product carries genuine research pedigree rather than just marketing language borrowed from studies that used a different formulation entirely.

The Shot's Numbers: All The Details

Beet It Organic Concentrated Beetroot Shot, 70ml per bottle, sold in packs of 15 for a two-week daily supply. Certified organic by the Soil Association, made from concentrated beetroot juice with no added sugar or preservatives. Each shot states 300mg of dietary nitrates on the label, and the juice base means nitrate retention has not been degraded by the drying process that affects capsule and tablet products. Manufactured in the UK by James White Drinks.

Health4All Purest Beetroot Extract, 4500mg, 60 Capsules

Best Capsule for a Stated Nitrate Figure

based on 112 Amazon UK reviews (4.4★), adjusted for formulation quality

Why This Capsule Stands Out on Transparency

Almost every capsule and tablet product on Amazon UK lists a beetroot weight and stops there. Health4All is the exception, stating 6.44mg of nitrates per capsule on the product listing itself. That figure is genuinely modest against the 300 to 400mg used in clinical trials, so this is not a product to expect blood-pressure-trial results from at the labelled serving. What it does offer is honesty: buyers can see exactly what they're getting rather than inferring it from a beetroot weight that says nothing about the active compound.

Health4All's Formula: All The Details

Health4All Purest Beetroot Extract, 60 capsules, dried root equivalent to 4,500mg per capsule, standardised to state 6.44mg nitrates per capsule. Vegan, made in the UK to GMP standards. No added fillers or binders beyond what's needed to form the capsule. Positioned by the brand specifically around blood pressure and circulation support, which fits the low but declared nitrate content more honestly than most competing capsule products.

New Leaf Beetroot Capsules, 5100mg, 180 Vegan Capsules

Best-Selling High-Strength Capsule

based on 1989 Amazon UK reviews (4.5★), adjusted for formulation quality

The Numbers Behind New Leaf's Popularity

Nearly 2,000 reviews make this the most reviewed beetroot product on Amazon UK, and New Leaf is a B Corp-certified brand with genuine manufacturing credibility behind it. The formula combines a 50:1 beetroot extract with whole beetroot powder for 5,100mg per two-capsule serving, enriched with black pepper for absorption. It's worth reading a handful of the product's own reviews before buying, though. Several customers ask the same question directly on the listing: how much actual nitrate is in each pill. New Leaf doesn't answer that on the label, and a 50:1 extract ratio, while a genuine standardisation step, tells you the concentration relative to raw beetroot, not the nitrate dose itself.

New Leaf's Formula: All The Details

New Leaf Beetroot Capsules, 180 or 360 count, 5,100mg per two-capsule serving combining Beetroot 50:1 Extract and Beetroot Powder, plus a 10:1 black pepper extract. Vegan, B Corp certified, made in the UK. No nitrate content is stated anywhere on the packaging or listing, despite the high headline mg figure.

Horbaach High Strength Beetroot, 12,000mg, 120 Tablets

Best Value — Largest Headline Dose

based on 663 Amazon UK reviews (4.4★), adjusted for formulation quality

Horbaach's Case for Being the Budget Pick

At 120 tablets covering four months on a one-a-day dose, this is the cheapest per-day option in the lineup by a clear margin. The headline 12,000mg figure, derived from a 25:1 extract concentration, is the largest of any product reviewed here, and Horbaach is a large, established supplement brand with a wide UK footprint. Worth a look for anyone who wants the lowest ongoing cost and isn't fixated on a specific nitrate target. The trade-off is the same one that applies to New Leaf: a big headline number and an extract ratio, but nothing on the label about nitrate content itself.

Horbaach's Formula: All The Details

Horbaach High Strength Beetroot, 120 tablets, one-a-day formula providing the equivalent of 12,000mg beetroot from a 25:1 extract. Suitable for vegans and vegetarians. Sold in a resealable pouch. No nitrate figure is disclosed on the packaging, and the 25:1 ratio describes concentration relative to raw beetroot rather than an active dose.

Lily Green Pure Beetroot Capsules, 1300mg, 90 Vegan Capsules

Best No-Filler Everyday Capsule

based on 236 Amazon UK reviews (4.3★), adjusted for formulation quality

What Sets the Everyday Capsule Apart

Lily Green keeps things simple. There's no proprietary blend, no unusually large headline mg figure, and the label states plainly that the formula contains no fillers, bulking agents, or artificial ingredients, just whole beetroot powder in a capsule. At 1,300mg per two-capsule serving, the raw dose is the lowest of any product in this comparison, and like the rest of the capsule field, no nitrate content is stated. It suits someone who wants a clean, unfussy general wellbeing capsule rather than a product chasing a specific research dose.

Lily Green's Formula: All The Details

Lily Green Pure Beetroot Capsules, 90 capsules, 1,300mg beetroot powder per two-capsule serving. Vegan, no fillers or bulking agents added. UK-based brand selling directly through Amazon. No nitrate mg figure is provided; the listing describes the product only in terms of general vitamin, mineral, and nitrate content without quantifying the latter.

Matter Daily Beets Beetroot & Hibiscus Capsules, 60 Capsules

Best Multi-Ingredient Cardiovascular Blend

based on 185 Amazon UK reviews (4.2★), adjusted for formulation quality

The Case for the Blended Formula

Matter takes a different approach entirely, pairing beetroot with hibiscus, grape seed extract, turmeric, tart cherry, blueberry, broccoli, kale, and four B vitamins in a single capsule, positioned as a broader cardiovascular support product rather than a pure nitrate source. The brand states the formula was developed with input from cardiovascular health specialists and tested by Campden BRI, a respected UK food and drink testing laboratory. This is the product to pick if the goal is general heart-health support across several mechanisms at once, rather than maximising nitrate intake specifically.

Matter's Formula: All The Details

Matter Daily Beets, 60 capsules, one month's supply at two capsules daily. Twelve active ingredients including beetroot, hibiscus, grape seed extract, turmeric, tart cherry, blueberry, broccoli, and kale, alongside vitamins B1, B6, B9, and B12. Manufactured in a GMP-certified UK facility with Campden BRI testing. Because beetroot is one of twelve ingredients rather than the sole active compound, no individual nitrate figure is stated, and the effective beetroot dose per capsule is inherently diluted compared with a single-ingredient product.

Safety and Side Effects

Beetroot nitrate is well tolerated in clinical studies, with the most common "side effect" being harmless pink or red urine and stool (beeturia) from the beetroot pigment itself — not a safety concern.³ Because nitrate lowers blood pressure, anyone taking blood pressure medication, or drugs for heart failure or erectile dysfunction that also cause vasodilation, should check with their GP first to avoid an excessive drop in blood pressure.

Methaemoglobinaemia, the oxygen-transport disorder sometimes raised as a nitrate risk, hasn't been documented in adults at the doses used in beetroot supplements or trials — the real-world risk applies mainly to infants given high-nitrate foods, not adult supplement use. It isn't recommended in pregnancy without medical advice, and anyone on dapsone or topical benzocaine should avoid high-nitrate products, since those specific drugs do meaningfully raise methaemoglobinaemia risk.

Best Beetroot Supplement FAQ

What is dietary nitrate and how does beetroot raise nitric oxide levels?

Beetroot is naturally rich in inorganic nitrate, a compound the body converts in two steps: first into nitrite by bacteria living on the back of the tongue, then into nitric oxide once it reaches tissue with lower oxygen levels. Nitric oxide relaxes the smooth muscle lining blood vessels, widening them and improving blood flow. This nitrate-nitrite-nitric oxide pathway runs alongside the body's main route to nitric oxide production and becomes especially active during exercise and in areas of the body where oxygen is scarce.¹

Does beetroot actually lower blood pressure?

Yes, and the evidence is now fairly consistent across multiple trials. A randomised, double-blind, placebo-controlled study in patients with hypertension found that 250ml of beetroot juice daily for four weeks reduced clinic blood pressure by 7.7/2.4mmHg, with no drop-off in effect over the study period.⁴ A more recent systematic review and meta-analysis pooling multiple randomised trials confirmed that beetroot juice meaningfully lowers blood pressure in people with hypertension, in line with European Society of Hypertension guidance on lifestyle interventions.⁵

What dose of nitrate is actually used in the research?

Most of the strongest blood pressure and general performance trials use daily doses in the region of 300 to 400mg of nitrate, roughly the amount in a single concentrated 70ml beetroot shot. Some exercise performance studies in well-trained athletes have used higher intakes, around 12mmol (roughly 750mg) daily over several days, to produce measurable gains in time-trial performance.⁶ This is the figure to check a product against, and it's precisely what most capsule and tablet listings on Amazon UK fail to disclose.

Does beetroot improve exercise performance?

There's a reasonably strong mechanistic and trial-based case for it, particularly in less-trained individuals. Nitrate supplementation reduces the oxygen cost of submaximal exercise, meaning muscles use less oxygen for the same output, and can also enhance the contractile function of fast-twitch muscle fibres.² A crossover trial in well-trained cyclists found that seven days of beetroot juice supplementation improved 10km time trial performance by around 1.6%, with the effect present in both normal and low-oxygen conditions.⁷ Results are less consistent in elite, highly trained athletes, whose baseline efficiency leaves less room for improvement.

How long does it take to notice an effect?

Blood pressure reductions have been measured within hours of a single dose and remain stable with daily use over several weeks.⁴ For exercise performance, most positive trials use a loading period of several days to two weeks of consistent daily intake before testing, rather than expecting a benefit from a single dose taken immediately before activity, although some studies do report acute effects within two to three hours of a single shot.

Is beetroot supplementation safe, and are there any side effects?

For most healthy adults, dietary nitrate from beetroot is considered safe at the doses used in research, and it's the same compound found naturally in leafy green vegetables like spinach and rocket. The most common side effect is beeturia, a harmless pink or red tinge to urine and stool caused by beetroot pigments rather than nitrate itself. One practical caution: using antibacterial or chlorhexidine-based mouthwash around the time of dosing reduces the effect, since it kills the oral bacteria responsible for the first conversion step from nitrate to nitrite.⁸ Anyone on blood pressure medication should be mindful that the effects of dietary nitrate and antihypertensive drugs can add together.

Why does it matter whether a product states its nitrate content?

Because "beetroot 5000mg" and "beetroot 5000mg with 300mg nitrates" can be genuinely different products in terms of what they'll actually do. Raw nitrate content in beetroot varies considerably by cultivar and growing conditions before it's even processed, and drying beetroot into a powder for capsules or tablets can degrade nitrate further compared with a juice concentrate. A large beetroot weight on a label is not a reliable stand-in for the compound that produces the measured effects in clinical trials, which is why this guide treats a stated nitrate figure as the most important single piece of information on any listing.

Does beetroot pair well with other performance or nootropic supplements?

It does, and through a genuinely different mechanism to most of what's covered elsewhere on this site. Beetroot's nitrate pathway improves blood flow and oxygen efficiency, while creatine supports the phosphocreatine energy system that regenerates ATP during high-intensity effort. The two address separate steps of the same overall performance picture, blood flow versus energy substrate, and are commonly stacked together by athletes. For a broader look at how beetroot fits alongside other stamina and fatigue-focused options, see our guide to the best supplements for energy.

The Best Beetroot Supplement for You

Beet It's Organic Concentrated Shot is the pick for anyone who wants a nitrate dose that actually matches what clinical trials have used, backed by organic certification and a UK juice producer with genuine research history in the field. Health4All is the better fit if a capsule format matters more than hitting the full research dose, since it's the rare capsule product willing to state a nitrate figure at all, even a modest one. New Leaf and Horbaach suit buyers prioritising review volume or cost per day respectively, provided the lack of a stated nitrate content is an acceptable trade-off. Lily Green and Matter round out the list for a no-filler everyday capsule and a broader multi-ingredient cardiovascular blend. Whichever you choose, check the label for an actual nitrate figure before assuming a big beetroot number means a big effect, and consider pairing it with creatine if performance, rather than blood pressure alone, is the goal.