Optimise VO₂ Max, Boost Power & Recover Faster"

Stamox Oxy-plus Competition beetroot extract powder for endurance, VO2 max, and power, anti-doping tested

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Outlast Your Competition

Stamox Oxy-Plus — Beetroot Powder Formulated in Norway

4.9

4000+ ATHLETE REVIEWS

$49.00 USD

Breathe easier. Push harder. Recover faster. Stamox optimises how your body uses oxygen at the cellular level — lowering the oxygen cost of exercise so you work harder for longer, with less strain.

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12-Week Guarantee: Measurable results, or your money back.

Trusted By The Best

Athlete in sportswear leaning on bridge railing, promoting natural endurance and recovery

Sustained Wattage, Late-Stage Power

"Multiple new PBs since I started Stamox. More explosive power. Sustained energy to finish strong."

- Rolf Solheimdal Johansen, Multiple World Champion in Triathlon & Undefeated Norwegian Champion in Winter Triathlon

Sophie Souwer

x2 World Champion, x2 Olympian, x3 European Champion

"Lactate Threshold jumped from 82% to 88% – I can push harder for longer with Stamox."

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."

Mathis Desloges

x3 Silver Medals at the 2026 Winter Olympics

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

Maicol Petta

AG Ironman Champion

"My heart rate is 5 to 6 bpm lower at the same pace with Stamox. Same intensity, less strain."

Jente Michels

x2 European Champion, Alpecin‑Deceuninck Cyclist

“The purest beetroot powder on the market. Boosted my power and VO₂ max - helping me become U23 European Champion”

ATHLETE DATA // USER METRICS

Elite Performance Data

-8 BPM

LOWER THRESHOLD HEART RATE

ARVID J. NORDIC CYCLIST CHAMP

+4.5

VO₂ MAX INCREASE (4 MO)

THOMAS E. X2 NATIONAL ROWER CHAMP

+2.6%

POWER OUTPUT JUMP

JACK B. ULTRA DISTANCE RECORD HOLDER

See 4000+ Athlete Reviews →

Athlete sprinting on track, showcasing power and endurance for peak performance

Backed by Beetroot Research

IOC Level A

One of only five supplements with the highest evidence rating in sport. Alongside caffeine and creatine.

AIS Group A

Australian Institute of Sport's highest supplement classification. Scientifically proven to work.

180+

Peer-reviewed human trials on beetroot and performance. 19 years of R&D behind every serving.

Developed in Norway. Refined over 19 years.

Smiling older man with glasses, Utrecht University and FH OÖ logos, outdoors

Dr. Nils Reither

Dr. Nils Reither, DVM — Veterinarian · Utrecht, 1990 · 36 years in industry

In 2007, Dr. Reither created the foundational Stamox matrix. Since then, it has been validated by 19 years of elite use, ongoing R&D with the University of Applied Sciences Upper Austria, and independent anti‑doping testing.

From Norway, for human performance.

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Hand pouring vibrant beetroot powder from wooden spoon into Stamox Oxy-plus jar on mountain moss, boosting endurance naturally.

Measurable. No guesswork.

Stamox delivers the full beetroot matrix — nitrates, betaine, betalains. Backed by 180+ studies. 19 years. Thousands of athletes. One result: lower heart rate, faster recovery, predictable endurance.

Beetroot is one of only five supplements with IOC Level A and AIS Group A classification — the highest evidence tier in sport, alongside caffeine and creatine.

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