Optimise VO₂ Max. Sustain Power. Recover Faster."

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

1 8

Stamox Oxy-Plus — Beetroot Endurance Extract

4.9

4,000+ Reviews

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."

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.

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

The Evidence

Beetroot nitrate is 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

One of only five supplements with strong performance evidence — alongside caffeine and creatine.

19 Years R&D

Formulated in Norway. Refined for 19 years. Tested at the anti-doping lab in Cambridge.

Read the science →

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

19 Years in the Making

Developed in Norway. Founded in 2007 by veterinarian Dr. Nils Reither. Nineteen years of refinement. One formula.

Read Our Story →

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

How the Pros Take Stamox

Four athletes. Four protocols. Pick the one that matches your block.

Runner in race gear, optimizing VO2 max with beetroot sport nutrition for endurance.

Yohan Zaradzki
Belgian Marathon Champion, 2:12 Marathon · 62:31 Half

1 tbsp easy days · 2 tbsp threshold and VO₂ blocks · 3 tbsp long runs

Scales dose to session intensity.

Two cyclists in aero gear training by the ocean, optimizing vo2 max with beetroot sport nutrition.

Gilberto Neirotti
AG Ironman Champ · KONA 2026 Qualifier

2 tbsp daily for 5 days pre-race · 3 tbsp on race morning

Loads for five days, then peaks on race day.

Cyclist celebrating victory, focusing on endurance and VO2 max for sports nutrition.

Jente Michels
2x European Champion · Alpecin-Deceuninck

2 servings/day for 10 days before racing

Built for stage races and long blocks.

Runner with bib 3098 utilizing stamox beetroot sport nutrition for vo2 max endurance.

Connor Rogers
Runner · 14:27 5K · 30:22 10K

1–2 tbsp training days · 2 tbsp for 5–7 days before racing · 3 tbsp on race day

Tapers up through race week. Same pattern as the 12-Week Protocol.

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.