A 250 mL serving of beetroot juice provides 250-500 mg of dietary nitrates.
- Beetroot juice is one of the most well-researched natural sources of dietary nitrates, with over 1,000 controlled trials backing its core benefits
- A 2013 meta-analysis by Siervo found an average 4 to 5 mmHg drop in systolic blood pressure with daily beetroot juice consumption
- For exercise performance, 500 mL taken 2 to 3 hours pre-workout reduces oxygen cost and improves time-trial performance by 2 to 3%
- Never use antibacterial mouthwash around the time you drink beetroot juice, as it destroys the oral bacteria needed to convert nitrate to nitric oxide
- Pink urine (beeturia) occurs in 10 to 14% of people and is harmless, but people with calcium oxalate kidney stones should limit intake due to high oxalate content
- Load consistently for 5 to 7 days for best blood pressure results rather than relying on a single dose
What's Actually in Beetroot Juice
Beetroot juice is exactly what it sounds like: the extracted juice of Beta vulgaris, the common red beet. But calling it “just beet juice” undersells the biochemistry involved.
The star compound is dietary nitrate (NO3). A standard 250 mL serving contains roughly 250 to 500 mg of nitrate, depending on the variety and growing conditions. That’s a significant amount. Once you drink it, oral bacteria on your tongue convert nitrate to nitrite (NO2), which then converts to nitric oxide (NO) in the bloodstream. That final product, nitric oxide, is where all the interesting physiology happens. It dilates blood vessels, reduces oxygen cost in muscle tissue, and supports endothelial function. The full nitrate-nitrite-NO pathway was characterized largely through the work of Jon Lundberg and colleagues at the Karolinska Institute, whose research through the 2000s reframed dietary nitrate as genuinely beneficial rather than something to avoid.
Beyond nitrates, beetroot juice delivers betalains (the pigments responsible for that aggressive red color, also potent antioxidants), folate, manganese, and potassium. Betalains are particularly interesting because they’re not found in many other foods, and their antioxidant capacity in vitro has tested at roughly 10 times the strength of vitamin E. Whether that translates equally in vivo is still being worked out.
Here’s the thing: most of the research focuses on nitrates as the primary driver. But I suspect betalains are doing more than we currently give them credit for.
Evidence-Based Beetroot Juice Benefits
So what does it actually do in real people?
Blood pressure reduction. This is where I’d say the evidence is strongest. A 2013 meta-analysis by Siervo and colleagues, published in the Journal of Nutrition, pooled data from multiple trials and found an average reduction of 4 to 5 mmHg in systolic blood pressure following beetroot juice supplementation. That might sound modest, but a 4 mmHg drop at the population level translates to meaningful reductions in cardiovascular events. For context, some pharmaceutical interventions don’t do much better in mild hypertension.
Exercise performance. Bailey and colleagues showed in 2009, in a study that’s become something of a landmark in sports nutrition, that 500 mL of beetroot juice reduced the oxygen cost of cycling by around 19% at submaximal intensities. That means your muscles can do the same amount of work using less oxygen. Subsequent research has confirmed 2 to 3% improvements in time-trial performance in trained athletes. That’s not a small number. In elite sport, that’s the difference between a podium finish and going home empty-handed.
Published in Hypertension (2008), Webb and colleagues demonstrated that beetroot juice improves peripheral blood flow even in healthy subjects, with effects visible within hours of a single dose. Better circulation matters not just for exercise but for tissue oxygenation generally.
Cognitive benefits. Here’s one people don’t expect. Presley and colleagues in 2011 found that older adults consuming a high-nitrate diet including beetroot juice showed improved perfusion to the frontal lobe, a brain region that deteriorates with aging and is associated with executive function. The mechanism is the same: nitric oxide opens up blood vessels, including in the brain. I find this area of research particularly compelling because the need is enormous and the intervention is so simple.
The evidence is reasonable for anti-inflammatory effects through betalain activity, and there’s emerging data on improved insulin sensitivity in some type 2 diabetes trials. That said, I’ll be honest: the diabetes data is thin. A handful of small trials, inconsistent methodology, too early to draw firm conclusions.
There’s also a small body of work suggesting betaine, a compound derived from beets, may help with non-alcoholic fatty liver disease. Interesting, but again, preliminary.
How Much Beetroot Juice to Drink: Dosage Guide
Dosage is where a lot of people go wrong, either drinking too little to see any effect or overdoing it unnecessarily.
For blood pressure, the research consistently clusters around 250 to 500 mL daily, providing approximately 6.4 mmol of nitrate. One to two cups a day. The BP effects are cumulative: Siervo’s analysis found that loading for 5 to 7 days produces better and more stable results than a single dose. If you’re drinking it once and expecting transformation, you’ll be disappointed.
For exercise performance, 500 mL consumed 2 to 3 hours before your session is the protocol most studies use. Timing matters here because nitric oxide production peaks roughly 2 to 3 hours after ingestion. Drinking it right before you lace up your shoes won’t give the same result as proper pre-loading. I usually tell people to drink it while eating their pre-workout meal.
For general health maintenance, concentrated beet shots of 70 to 150 mL are a practical option. The nitrate per mL is similar to fresh juice, so you get comparable benefits in a smaller volume. Both formats work.
One thing I always flag: don’t use antibacterial mouthwash before or after drinking beetroot juice. The oral bacteria on your tongue are the first step in converting nitrate to nitrite. Kill those bacteria and you’re short-circuiting the entire pathway. A 2008 study by Govoni and colleagues confirmed that chlorhexidine mouthwash essentially abolished the blood pressure response to nitrate. That’s a significant practical point that rarely gets mentioned.
Look, some people also report vivid dreams when drinking beet juice close to bedtime. The evidence for this is anecdotal, but given that nitric oxide is neuroactive, it’s plausible. I’d stick to morning or early afternoon dosing to be safe.
5 Easy Beet Juice Recipes
You don’t need a commercial juicer or a culinary degree. These recipes work in a standard blender or centrifugal juicer.
Recipe 1: Classic Beet-Apple-Ginger Juice One medium raw beet (peeled), one apple (cored), a one-inch knob of fresh ginger, and 250 mL of cold water. Juice or blend and strain. The apple sweetens the earthiness, ginger cuts through any bitterness. This is the one I’d recommend if you’re new to beet juice and not yet sold on the flavor.
Recipe 2: Pre-Workout Performance Shot One small raw beet, juice of one lemon, a pinch of cayenne pepper, and a splash of cold water. Blend and drink 2 to 3 hours before training. Keep it concentrated. You want the nitrate hit without a full stomach before exercise.
Recipe 3: Beet-Carrot-Orange Detox Blend One medium beet, two large carrots, one peeled orange, 200 mL of water. This is a good morning juice. Carrots add natural sweetness and beta-carotene, orange adds vitamin C (which may actually enhance nitrite absorption, though the evidence on that is early).
Recipe 4: Heart-Healthy Beet-Berry Smoothie Half a cup of cooked beets, one cup of mixed berries (frozen works fine), 150 g of Greek yogurt, half a banana. Blend until smooth. Cooked beets lose some nitrate content compared to raw, but you gain fiber and the betalains remain largely intact. The berries add their own anthocyanin antioxidants, making this a cardiovascular double-hit.
Recipe 5: Earthy Beet-Cucumber-Mint Cooler One medium raw beet, one cucumber, a handful of fresh mint, juice of half a lemon, 300 mL of water. This is the refreshing summer version. Cucumber dilutes intensity, mint makes it genuinely pleasant, and the lemon brightens everything. If you hate how beet juice tastes, start here.
One storage note: refrigerate fresh juice and use it within 48 hours. Nitrates start to degrade after that, and you lose a significant portion of the functional benefit. I don’t recommend making a big batch for the week.
Beetroot Juice Side Effects
Let’s talk about the thing that catches everyone off guard the first time.
Beeturia, pink or red urine after consuming beets, affects around 10 to 14% of people. It’s a genetic variation in how certain individuals metabolize betalain pigments. It looks alarming. It isn’t. Pink stools can occur for the same reason. If you see it and you’ve had beet juice recently, that’s almost certainly the explanation.
GI upset is rare and typically only occurs with large doses. Some people with sensitive digestive systems find that 500 mL in one sitting is too much. Start with smaller amounts and build up.
The more clinically relevant side effect is blood pressure reduction. That sounds contradictory given that we’re recommending it for BP, but if you’re already on antihypertensive medication, the additive effect can cause lightheadedness or dizziness, especially when standing up. I’d be cautious here and monitor your numbers if you’re combining the two.
Beets are high in oxalates, with approximately 152 mg per 100g of raw beetroot. For people with a history of calcium oxalate kidney stones, this is a genuine concern worth taking seriously (more on who should avoid it below).
There’s also a theoretical interaction with hypoglycemic medications, given that some trials show mild improvements in insulin sensitivity. The evidence is limited, but if you’re on diabetes medication, it’s worth being aware of.
Pregnancy is generally fine at normal dietary amounts. High-dose supplementation during pregnancy hasn’t been well-studied, so I’d keep it to standard culinary quantities rather than therapeutic doses if you’re pregnant.
Who Should Skip Beetroot Juice
Some people really should limit or avoid it.
Anyone with a history of calcium oxalate kidney stones should be cautious. The oxalate load in beets is significant, and oxalate is a primary building block of the most common type of kidney stone. This doesn’t mean never eat a beet again, but regular therapeutic doses are probably not a good idea without discussing it with your doctor.
People on strong antihypertensive medications need to be careful about the additive BP-lowering effect I mentioned above. Not a firm contraindication, but worth monitoring.
Severe IBS sufferers and anyone following a low FODMAP diet should know that beets contain fermentable carbohydrates that can trigger symptoms. It’s one of the vegetables consistently flagged on standard FODMAP lists.
Infants under 6 months should never be given high-nitrate vegetables or juices. Greer and Shannon highlighted in 2005 the risk of methemoglobinemia, a condition where nitrate interferes with oxygen transport in infants whose gut bacteria and digestive systems haven’t matured. This is a real risk in very young children, not a theoretical one.
People with chronic kidney disease need to be particularly careful given both the potassium and oxalate content. Talk to your nephrologist before adding therapeutic amounts to your routine.
Finally, rare root vegetable allergies do exist. If you’ve had reactions to other root vegetables, proceed cautiously the first time.
FAQs
How much beetroot juice should I drink per day? For general health and blood pressure support, 250 to 500 mL of fresh beetroot juice daily. For a quicker concentrated option, 70 to 150 mL of a commercial beet shot delivers similar nitrate content.
When is the best time to drink beetroot juice? Morning works well for general health purposes. For athletic performance, drink 500 mL roughly 2 to 3 hours before your workout, when nitric oxide production peaks.
Does cooking beets destroy the nitrates? Cooking reduces nitrate content somewhat, but betalains are largely preserved. Raw beets deliver more nitrate. If you’re juicing specifically for performance or blood pressure benefits, raw is preferable.
Can beetroot juice raise hemoglobin? Not directly. Beets contain some iron and folate, which support red blood cell production, but the amounts are modest. Beetroot juice won’t meaningfully raise hemoglobin in the short term.
How long until beetroot juice lowers blood pressure? Some people see a measurable drop within 3 to 6 hours of a single large dose. For sustained reductions, consistent daily intake for 5 to 7 days produces the best results based on the available trial data.
Is it OK to drink beetroot juice every day? For most healthy adults, yes. Daily intake at recommended amounts is safe. If you have kidney stones, kidney disease, or are on antihypertensive medications, check with your healthcare provider first.
Frequently Asked Questions
For general health and blood pressure support, 250 to 500 mL of fresh beetroot juice daily. For a quicker concentrated option, 70 to 150 mL of a commercial beet shot delivers similar nitrate content.
Morning works well for general health purposes. For athletic performance, drink 500 mL roughly 2 to 3 hours before your workout, when nitric oxide production peaks.
Cooking reduces nitrate content somewhat, but betalains are largely preserved. Raw beets deliver more nitrate. If you're juicing specifically for performance or blood pressure benefits, raw is preferable.
Not directly. Beets contain some iron and folate, which support red blood cell production, but the amounts are modest. Beetroot juice won't meaningfully raise hemoglobin in the short term.
Some people see a measurable drop within 3 to 6 hours of a single large dose. For sustained reductions, consistent daily intake for 5 to 7 days produces the best results based on the available trial data.
Beetroot juice is one of the most well-researched natural sources of dietary nitrates, with over 1,000 controlled trials backing its core benefits A 2013 meta-analysis by Siervo found an average 4 to 5 mmHg drop in systolic blood pressure with daily beetroot juice consumption For exercise performance, 500 mL taken 2 to 3 hours pre-workout reduces oxygen cost and improves time-trial performance by 2 to 3%
