What Are Beet Chews Good For?

Beet chews are concentrated beetroot supplements designed to deliver dietary nitrate, a compound your body converts into nitric oxide to relax blood vessels, lower blood pressure, and improve oxygen efficiency during exercise. Most of the research behind them comes from studies on beetroot juice and beetroot powder, and the active ingredient is the same regardless of form: inorganic nitrate. The benefits range from measurable drops in blood pressure to longer time-to-exhaustion during workouts, with some evidence pointing toward brain health and faster recovery from hard training sessions.

How Nitrate From Beets Becomes Useful

The nitrate in beet chews does not do much on its own. It has to be converted first into nitrite, and then into nitric oxide, a molecule that signals blood vessels to widen. The first step in that conversion happens in your mouth: bacteria living on your tongue reduce nitrate to nitrite after the nitrate is concentrated in your saliva.¹ Once swallowed, that nitrite enters the bloodstream and gets further reduced to nitric oxide, especially in low-oxygen environments like working muscles. This pathway is completely separate from the enzyme-driven system your body already uses to make nitric oxide from the amino acid L-arginine, which means dietary nitrate effectively gives you a second route to produce it.

This matters because the enzyme-driven pathway becomes less efficient with age, obesity, and cardiovascular disease. The nitrate-nitrite-nitric oxide route essentially picks up the slack. It also explains why beet supplements tend to show stronger effects in older adults and people with health conditions than in young, elite athletes whose nitric oxide systems are already running well.

Blood Pressure

Lowering blood pressure is the most consistently demonstrated benefit of beetroot nitrate. Beetroot is recognized as a natural way to increase nitric oxide availability, and it has emerged as a strategy for managing conditions tied to reduced nitric oxide, particularly high blood pressure and poor blood vessel function.² The effect kicks in fast. In a placebo-controlled crossover trial, drinking nitrate-containing beetroot juice dropped central (aortic) systolic blood pressure by about 5 mmHg within 30 minutes.³ That might not sound dramatic, but population-level data suggest that even a few points of sustained reduction in systolic pressure meaningfully cuts the risk of stroke and heart attack over time.

The effect is not limited to a single dose. In a study tracking both acute and longer-term supplementation, blood pressure dropped by roughly 4% and stayed lower throughout a 15-day beetroot juice protocol. Plasma nitrite levels rose within a few hours of the first dose and remained elevated across the full supplementation period.⁴ A pilot study using beetroot powder found that while blood pressure did not drop significantly with that particular product, arterial stiffness did decrease, and higher nitrate metabolite levels in the blood correlated with lower blood pressure readings.⁵ The inconsistency between products is worth noting and is discussed further below.

Blood Vessel Function Beyond Pressure

Blood pressure is only part of the vascular picture. Healthy blood vessels also need to be able to dilate on demand when tissues need more blood flow. In healthy older men, a single dose of dietary nitrate improved the ability of a major leg artery to dilate in response to increased blood flow, with the supplement group showing a meaningful increase in what clinicians call flow-mediated dilation compared to a placebo group that showed essentially no change.⁶ The nitrate group also had a reduction in a measure of arterial wave reflection, which reflects less stiffness in the arterial system. These improvements came alongside an 8.6-fold rise in plasma nitrite, confirming the supplement was doing what it was supposed to biochemically.

This is relevant if you are thinking about beet chews for general cardiovascular wellness rather than athletic performance. The ability of your arteries to flex and respond is one of the earliest things to decline in cardiovascular aging, and it predicts future problems long before blood pressure readings become alarming.

Endurance Exercise Performance

The exercise benefits are where most of the consumer interest lies, and the evidence is solid for recreational and moderately trained athletes. A systematic review of beetroot juice studies on cardiorespiratory endurance found that supplementation allowed athletes to sustain effort at submaximal intensities significantly longer. At 60% of peak power, athletes lasted about 100 seconds longer on beetroot juice compared to placebo; at 70%, roughly a minute longer; and at 80%, about 30 seconds longer.⁷ The proposed explanation is that nitrate reduces how much oxygen your muscles need at a given workload, effectively making the same effort feel a little easier and delaying the point of exhaustion.

Fitness level matters here. A study comparing runners of different aerobic fitness found that less-fit runners saw a clear reduction in oxygen cost during moderate-intensity running after consuming nitrate-rich beetroot juice, while highly fit runners did not.⁸ The strongest correlation between fitness level and the oxygen-saving effect appeared at moderate intensities, suggesting that beet chews are most useful for everyday exercisers rather than elite competitors. If you are already training at a very high level, your body’s existing nitric oxide machinery may already be operating near capacity.

Sprint Power and High-Intensity Efforts

The benefits are not limited to slow, steady endurance work. In a double-blind crossover study using a 30-second all-out sprint test, beetroot juice supplementation increased peak power by about 4% and mean power by about 4%, while also cutting the time to reach peak power by roughly 18%.⁹ Twelve of the 15 participants hit a higher peak power after beetroot juice than after placebo. In resistance exercise, supplementation increased both concentric and eccentric power output during half-squat exercise with moderate to large effect sizes.¹⁰

The mechanism likely involves nitric oxide’s role in regulating calcium handling and muscle contractile efficiency, though the exact pathways are still being worked out. For practical purposes, the takeaway is that beet chews are not just a distance-runner supplement. If your workouts include sprints, intervals, or strength training, there is plausible evidence of benefit.

Recovery After Hard Training

A systematic review of beetroot supplementation for exercise recovery found that most studies reported faster recovery of functional measures like strength and jump height, along with reduced muscle soreness, after damaging exercise bouts.¹¹ The results for blood markers of muscle damage and inflammation were less consistent, with most studies not finding significant improvements in those lab values. So you might feel and perform better in the days after a hard session, even if the underlying biochemical markers of tissue damage are not dramatically different. The review authors noted that longer supplementation protocols, starting several days before the exercise bout, might be needed to see those deeper changes.

Brain Health and Cognitive Function

This is where the evidence gets more interesting but less settled. A small study in older adults found that a high-nitrate diet increased blood flow to the frontal lobe white matter, particularly the regions involved in executive functioning and decision-making.¹² That is the part of the brain that handles planning, attention, and complex reasoning, and it is also one of the first regions to show reduced blood flow with aging. A separate clinical trial using a chewable beetroot supplement found improvements in memory consolidation, frontal lobe function, and cognitive flexibility in healthy adults, with memory recall improving by roughly 12 to 21% on specific tests.¹³

However, a 13-week pilot trial in overweight and obese older adults found no changes in cognitive function or overall cerebral blood flow at any nitrate dose tested.¹⁴ The difference may come down to who is being studied and how cognitive function is measured. Acute effects on specific cognitive tasks seem real, but lasting, broad cognitive improvement from long-term supplementation remains unproven. If you are considering beet chews for brain health specifically, the honest answer is that the science is early-stage and mixed.

People With Cardiovascular Disease

Paradoxically, some of the most encouraging data come from the populations with the most to gain. A review of inorganic nitrate supplementation in clinical cardiovascular populations noted that results seem more promising in patients whose oxygen delivery systems are already impaired, including people with heart failure and peripheral artery disease.¹⁵ In a trial of patients with peripheral artery disease who experienced pain when walking, combining beetroot juice with a 12-week exercise program tripled the improvement in the time before claudication pain set in, compared to exercise plus placebo. Walking distance also roughly doubled in the beetroot group versus the placebo group.¹⁶

One important exception: in people with type 2 diabetes, two weeks of dietary nitrate supplementation raised plasma nitrite levels but did not lower blood pressure, improve blood vessel function, or change insulin sensitivity.¹⁷ Diabetes involves widespread endothelial dysfunction that may blunt the downstream conversion of nitrite to nitric oxide, limiting how much benefit extra nitrate can provide. This does not mean beet chews are useless for people with diabetes, but the expectation of straightforward blood pressure reduction may not hold for this group.

Performance at Altitude

When you go to altitude, the drop in available oxygen makes everything harder. Because dietary nitrate works through an oxygen-independent pathway to produce nitric oxide, researchers have tested whether beet supplementation might partially offset the performance loss at elevation. A review of the evidence from simulated altitude studies suggested that nitrate supplementation may reduce the oxygen cost of exercise, raise arterial oxygen saturation, and improve exercise capacity in low-oxygen conditions.¹⁸ One study at simulated altitudes of 3,000 and 4,300 meters found that beetroot juice improved time trial performance by about 4% at both elevations, while also raising oxygen saturation in leg muscles during exercise.¹⁹

Not every study agrees. A field study conducted at genuine high altitude found that nitrate supplementation did not change exercise efficiency or most peak exercise variables, and the nitrate group actually had slightly lower peak oxygen consumption than placebo at both sea level and altitude.²⁰ The difference between laboratory simulations and actual mountain environments, including factors like cold, dehydration, and multi-day exposure, may explain why results diverge. If you are packing beet chews for a hiking trip, they are unlikely to hurt, but the benefit at real altitude is not guaranteed.

Why Mouthwash Can Undermine Your Beet Chews

Because the first step in converting nitrate to nitrite depends on bacteria living on your tongue, anything that wipes out those bacteria also wipes out the benefit. Studies using chlorhexidine-based antibacterial mouthwash found that it reduced the conversion of nitrate to nitrite and, in some cases, was accompanied by a rise in blood pressure in people with normal readings.²¹ This is not a minor interaction. If you are using a strong antibacterial mouthwash twice a day and taking beet chews for blood pressure support, the mouthwash could be neutralizing much of what the supplement is supposed to do. Non-antibacterial mouthwashes and basic oral hygiene practices that do not sterilize the tongue are not a concern.

Beeturia and Oxalate Concerns

The most noticeable side effect of regular beet consumption is beeturia, the passing of red or pink urine. It occurs in about 14% of people and is harmless. The red pigment, betalain, passes through the digestive system and is absorbed in the colon; whether it retains its color depends on individual gut chemistry and the presence of oxalic acid, which protects the pigment from being decolorized in the stomach.²² If you see pink in the toilet after taking beet chews, it is not blood.

The oxalate content is a more substantive concern for specific people. About 80% of kidney stones are calcium oxalate stones, and beets are relatively high in oxalates. A review of the evidence noted that a significant fraction of circulating oxalates comes from diet rather than internal metabolism, and that people with a family history of kidney stones should eat high-oxalate foods in moderation, ideally with adequate calcium in the same meal to reduce oxalate absorption.²³ Most beet chew products concentrate the nitrate but also carry along the oxalates. If you have a history of kidney stones, talk to your doctor before making beet chews a daily habit.

Product Variability Is a Real Problem

One of the less-discussed issues with beet supplements is that nitrate content varies wildly between products. An analysis of beetroot extracts and powders sold online found that nitrate concentrations ranged from 7.3 to 62.3 milligrams per gram, meaning you could get nearly nine times more nitrate from one brand than another at the same serving size. Some products delivered doses that exceeded European regulatory thresholds for acceptable daily intake.²⁴ The study highlighted a lack of consistency across the industry and a need for better standardization at every stage of manufacturing.

What this means for you is that the dose printed on a beet chew label may not reflect what is actually in the product. If you are choosing a product, look for brands that list the nitrate content per serving in milligrams rather than just “beetroot extract” with no potency information. Most of the positive research uses doses delivering roughly 5 to 8 millimoles of nitrate, which translates to about 300 to 500 milligrams. Products that do not specify nitrate content leave you guessing. Third-party testing certifications help, though they are not universal in this product category.

Timing and How Long Effects Last

Plasma nitrite levels peak roughly two to three hours after a dose of beetroot nitrate. This is why most exercise studies instruct participants to take their supplement about two and a half hours before testing. The blood pressure reduction follows a similar timeline, appearing within 30 minutes and remaining present for several hours.³ Longer-term supplementation does not appear to produce tolerance. In the study tracking supplementation over 15 days, the oxygen-cost reduction during moderate exercise was similar at day one, day five, and day fifteen, and blood pressure stayed lower throughout.⁴

For exercise purposes, taking a beet chew about two to three hours before your workout aligns with the pharmacokinetic window. For blood pressure management, a daily dose at a consistent time is more practical than trying to time peaks. There is no evidence that cycling on and off beet supplements is necessary, and no sign that the benefits wear out with continuous use.