Optimise VO₂ Max. Sustain Power. Recover Faster."

Trusted by Olympians, World Champions, and 4,000+ athletes

Stamox beetroot sport nutrition Oxy-plus powder for VO2 max endurance and recovery.

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Stamox Oxy-Plus — Beetroot Endurance Extract

Same pace. Less strain. Fresher legs tomorrow. Stamox helps your body use oxygen better.

Reduces oxygen cost by 3–5% at the same effort
Peak effect in 2–3 hours. No stimulants. No GI distress.
Full-spectrum beetroot matrix: nitrates, betaine, betalains

*Classified by the International Olympic Committee as one of only five supplements with strong performance evidence — alongside caffeine and creatine.

Shop Oxy-Plus Powder →

19 Years
R&D

Anti-Doping
Tested

Formulated
In Norway

8 Beats Lower. Same Watts

Athletes on a podium with medals, promoting stamox beetroot sport nutrition for vo2 max.

"380 watts at 145 bpm. Without Stamox: 153 bpm. That's 8 beats lower at the same power."

- Arvid Johannesen, Norwegian & Nordic Champion Cyclist

Thomas Elholm

x2 Gold National Champion Rower

"VO₂ max from 72.1 to 76.6 in 4 months. A jump that big is highly unlikely through training alone."

Omar Hassan

Danish Marathon Runner · 2:12:17 Copenhagen Marathon · Fastest Danish Runner

“Stamox, taken daily throughout the camp, improved oxygen efficiency and sustained the engine when it mattered. The result: 2:12:17.”

Mathis Desloges

x3 Silver Medals at the 2026 Winter Olympics

"Stamox has been a cornerstone of my Olympic preparation."

See 4000+ Athlete Reviews →

The Oxygen Economy

Athlete wearing a VO2 Master mask for sport nutrition and VO2 max testing.

Nitrates → Nitric Oxide

Blood vessels widen. More oxygen reaches working muscles with less cardiac strain.
Lower oxygen cost. Higher sustained output.

Blurry black and white action shot of a runner boosting VO2 max with beetroot sport nutrition.

Betalains → Antioxidant Shield

Beetroot's red pigments reduce oxidative stress from hard training. Less soreness. Fresher legs.

Athlete with Stamox beetroot sport nutrition for VO2 max on a track.

Betaine → Cellular Support

Supports cellular hydration and power at the muscle level. Hold peak power across repeated intervals.

Triathlete Knoll GER pouring water over head to cool down, boosting vo2 max with stamox beetroot sport nutrition.

Full Matrix → Predictable Effect

Nitrates, betalains, betaine. One formula. Same result every session.

The Timeline

Blurred action shot of an athlete for beetroot sport nutrition to boost vo2 max

The Evidence

One of the most studied ingredients in sport.

"Dietary nitrate reduces the O₂ cost of exercise and extends time-to-exhaustion by up to 16%."
— Prof. Andrew Jones, University of Exeter (Bailey et al., 2009)

IOC Consensus: Strong Evidence

One of only five supplements the International Olympic Committee classifies as having strong performance evidence — alongside caffeine and creatine.

19 Years R&D

Formulated in Norway. Refined since 2007. Anti-doping tested.

Read the science →

Dial In Your Block

Stamox beetroot sport nutrition powder being poured into a glass to improve VO2 max

Training Day

1 tablespoon → 2–3 hours before

Athlete mixing Stamox beetroot sport nutrition powder for VO2 max on a running track.

Race Day

2–3 tablespoons → 2–3 hours before

Three containers of Stamox beetroot sport nutrition for VO2 max enhancement.

Race Week

Daily loading for 3–7 days

19 Years in the Making

Portrait of a man with glasses, representing research for stamox beetroot sport nutrition VO2 max.

Formulated by Dr. Nils Reither (2007)

Developed in Norway through 19 years of research. Tested on elite cyclists and rowers.

Read Our Story →

FAQ

Raw beetroot powders contain fibers and oxalates that cause stomach issues during hard efforts. Stamox is a highly refined extract—we isolate the active matrix and remove the fibrous compounds for maximum tolerability.

However, as with any sports nutrition, we always recommend testing your dosing protocol in training before using it on race day.

Regular beetroot juice varies enormously in strength — one bottle may work, the next may not. Most products are not tested or standardised, so dosing is guesswork. Stamox delivers a consistent, measured dose every scoop — with the full beetroot matrix intact (nitrates, betaine, betalains). Trusted by elite athletes for 19 years.

Yes. Stamox undergoes rigorous testing by the Anti-Doping Laboratory in Cambridge.

They confirm it is 100% free from prohibited substances and natural contaminants. We regularly submit batch samples and can provide certification documents upon request.

Mix 1-2 tablespoons into 500ml of cold water, juice, or your pre-workout 2–3 hours before training or racing. Skip mouthwash and breath mints for at least 2 hours after taking Stamox, as mouthwash kills the oral bacteria required to convert dietary nitrates into nitric oxide.