Beetroot Juice
Beetroot juice is one of the most evidence-backed food-based ergogenic aids, with consistent research showing improved exercise performance and blood pressure reduction through its high dietary nitrate content that boosts nitric oxide production.
Quick Verdict
One of the best evidence-backed food-based performance enhancers, with real benefits for both exercise and blood pressure through the nitrate-nitric oxide pathway.
If you exercise regularly (especially endurance sports) or have mild hypertension, beetroot juice is one of the few food-based ergogenic aids with solid evidence. Take a concentrated shot 2-3 hours before exercise. Avoid mouthwash around dosing as it kills the oral bacteria needed for nitrate conversion.
At a Glance
Dose
500ml beetroot juice or 70ml concentrated shot (6-8 mmol nitrate)
When to Take
2-3 hours before exercise for performance benefits
Best Form
Concentrated beetroot juice shots
Evidence
60% avg
What It Is
Beetroot juice is a concentrated source of dietary nitrate (NO3-), containing approximately 6-8 mmol nitrate per 500ml of juice or in concentrated 70ml 'shots.' Beetroot (Beta vulgaris) also provides betalains (antioxidant pigments responsible for the deep red color), potassium, vitamin C, and various polyphenols. For sports performance, concentrated beetroot juice shots have become a widely used ergogenic aid. The nitrate content is the primary active component, as it serves as a substrate for nitric oxide production through the nitrate-nitrite-NO pathway. This is distinct from the L-arginine pathway and provides an alternative route to boost nitric oxide availability, particularly during exercise and hypoxic conditions.
How It Works
Dietary nitrate from beetroot juice is absorbed in the gut, concentrated in the salivary glands, and reduced to nitrite by oral bacteria on the tongue. This nitrite is then converted to nitric oxide (NO) in the stomach and tissues, particularly under the low-oxygen, low-pH conditions that occur during exercise. Increased nitric oxide enhances exercise performance through multiple mechanisms: vasodilation improves blood flow to working muscles, reduced oxygen cost of submaximal exercise improves exercise efficiency (reduced VO2 for same workload), enhanced muscle contractile function through improved calcium handling, and improved mitochondrial efficiency. For blood pressure, the vasodilatory effects of increased NO directly reduce peripheral resistance, lowering both systolic and diastolic pressure.
Evidence by Goal
exercise performance
Meta-analyses confirm beetroot juice improves time-trial performance by 1-3%, increases time to exhaustion, and reduces oxygen cost of exercise, with most consistent benefits in recreational athletes.
blood pressure
Meta-analysis of RCTs shows beetroot juice reduces systolic blood pressure by 3-4 mmHg and diastolic by 1-2 mmHg, with effects appearing within 2-3 hours of consumption.
Dosage & Usage
Standard Dose
500ml beetroot juice or 70ml concentrated shot (6-8 mmol nitrate)
Loading Protocol
For acute exercise benefits: single dose 2-3 hours before exercise. For sustained benefits: daily for 3-6 days.
Timing
2-3 hours before exercise for performance benefits; any time for blood pressure
Best Form
Concentrated beetroot juice shots (most practical) or fresh beetroot juice
📅 What to Expect
1-3 hours
Nitrate converted to nitric oxide. Blood vessels dilate. Blood pressure drops acutely.
Day 1-3
Consistent pre-exercise use improves endurance by 1-3% in trained athletes.
Week 2-4
Blood pressure reduction of 4-5 mmHg systolic with daily consumption.
Ongoing
No tolerance develops. Acute dosing continues to work for exercise performance.
🎯 How to Know It's Working
Better endurance during cardio
Less perceived effort at moderate intensity
Slight blood pressure reduction
If not working: If no performance boost, ensure you're drinking 2-3 hours pre-exercise and haven't used mouthwash (kills nitrate-converting bacteria).
🏷️ Buying Guide
✓ Look For
- • Concentrated nitrate content listed
- • Organic beetroot source
- • 500ml juice or equivalent powder
✗ Avoid
- • Diluted blends with added sugars
- • Products not specifying nitrate content
🛡️ Safety Profile
Common Side Effects
- • beeturia (red/pink urine — completely harmless)
- • red/dark stools (harmless)
- • GI discomfort in some individuals
⚠️ Contraindications
- 🚫 kidney stones (high oxalate content)
- 🚫 those on nitrate medications (additive hypotension)
💊 Drug Interactions
- • PDE5 inhibitors like sildenafil (additive blood pressure lowering)
- • nitrate medications for angina
- • blood pressure medications (additive effect)
Long-Term Safety
Beetroot juice has an excellent safety profile with no known long-term risks at recommended doses. The primary concerns are the high oxalate content (relevant for those prone to kidney stones) and potential additive effects with blood pressure medications. The red discoloration of urine and stool is harmless and should not be mistaken for blood.
👥 Who Benefits Most
Best For
- ✓ recreational and amateur endurance athletes
- ✓ individuals with mild hypertension
- ✓ cyclists, runners, and swimmers
- ✓ older adults seeking cardiovascular benefits
Less Effective For
- — elite athletes (smaller/negligible effects at high fitness levels)
- — those using antibacterial mouthwash (kills bacteria needed for nitrate conversion)
📚 Key Research
3 peer-reviewed studies supporting this supplement's effects.
Dietary nitrate and physical performance
Jones AM, Thompson C, Wylie LJ, Vanhatalo A · Annual Review of Nutrition (2018)
Comprehensive review confirming dietary nitrate (from beetroot) reduces oxygen cost of exercise, improves exercise tolerance, and enhances performance across multiple exercise modalities in recreational athletes.
Inorganic nitrate and beetroot juice supplementation reduces blood pressure in adults: a systematic review and meta-analysis
Siervo M, Lara J, Ogbonmwan I, Mathers JC · Journal of Nutrition (2013)
Meta-analysis of RCTs found inorganic nitrate and beetroot juice supplementation significantly reduced systolic blood pressure by approximately 4.4 mmHg.
Effects of beetroot juice supplementation on cardiorespiratory endurance in athletes: a systematic review
Dominguez R, Cuenca E, Mate-Munoz JL, et al. · Nutrients (2017)
Systematic review found beetroot supplementation improved cardiorespiratory endurance by enhancing efficiency, increasing time to exhaustion, and improving performance at various exercise intensities.
💰 Cost & Forms
Estimated Monthly Cost
$30-60
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