Optimise VO₂ Max, Sustain Power & Recover Faster"

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

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More Oxygen. Less Effort.

Stamox Oxy-Plus — Beetroot Powder Formulated in Norway

4.9

4000+ ATHLETE REVIEWS

$50.00 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 rowing on water, boosting endurance and VO2 max naturally for peak performance

VO₂ Max 72.1 → 76.6

"Stamox’s impact on my VO2 max is undeniable. My increase from 72.1 to 76.6 in just four months is highly unlikely through training alone—the data proves Stamox works."

- Thomas Elholm, x2 Gold National Champion Rower

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."

Maicol Petta

AG Ironman Champion

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

Ilias Fifa

European Champion 5000m

"16th in Europe. 2:11:33 at 37"

Rolf Solheimdal Johansen

Multiple World Champion in Triathlon

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

Mathis Desloges

x3 Silver Medals at the 2026 Winter Olympics

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

Håvard Haukenes

2x Olympian

"Used Stamox all the way to the Olympics. Better oxygen uptake. Better blood flow. More endurance. Sharper focus."

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 →

What Stamox Does For You

Athlete wearing STAMOX tank top and training mask, running in gym for endurance and VO2 max boost

VO₂ Max & Oxygen Economy

Use less oxygen. Sustain higher output. Reduces the O₂ cost of exercise — the same effort feels easier.

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

Fatigue Resistance & Power

Push past your previous limit. Hold peak power across repeated intervals.

Athlete cycling intensely on stationary bike, boosting endurance and recovery with natural beetroot powder

Recovery & Digestion

Less soreness. Fresher legs. Back up hard blocks sooner. Pure matrix. No GI distress.

Athlete pouring water over head during triathlon, wearing KNOLL GER race suit, boosting endurance and recovery.

Heart Health & Mental Clarity

Supports healthy blood pressure. Steady, stimulant-free energy. Sharper focus throughout the day.

How It Works

From acute vasodilation in 2–3 hours, through a 3–7 day loading phase, to mitochondrial efficiency in 2–4 weeks. See the Stamox timeline.

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

Backed by Research.

IOC Level A

The highest evidence tier in sport. One of only five supplements — alongside caffeine and creatine.

AIS Group A

Australia's top classification. Awarded only when the science is clear.

Decades of Research

Performance data across cycling, running, rowing, and team sports.

19 Years R&D

Refined since 2007. Anti-doping tested.

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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