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Breathe easier. Push harder. Recover faster.

Stamox is a patented beetroot extract that changes how your body uses oxygen at the cellular level — lowering the oxygen cost of exercise so you work harder for longer, with less strain.

The result? Measurable gains in endurance, power, and recovery. Backed by IOC Level A evidence, over 180 clinical studies, and trusted by Olympic athletes since 2007.

Peak effects within 2–3 hours. Mixes easily into water or your existing routine.

Runner in motion on track, stamox beetroot powder for endurance and athletic performance

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Used by the Best

Two runners in motion blurred on a track, promoting stamox beetroot powder for endurance

Proven by Science

16% Boost in Cyclists' Endurance

Nitric oxide, a key signaling molecule, widens blood vessels and improves mitochondrial efficiency. Your muscles use less oxygen to maintain the same power output.

This isn't a stimulant. It's a fundamental improvement in how your body uses fuel.

"The effects of beet juice on oxygen uptake cannot be achieved by any other known means, including training." - University of Exeter · Prof. Andrew Jones

See the Clinical Evidence →

Studies show using Stamox 2-3 hours before exercise can:

Athlete running in gym with mask, promoting stamox beetroot powder for endurance and VO2 max

Oxygen Efficiency

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

Cyclist in aerodynamic gear racing on road, boosted by stamox beetroot powder for endurance

Muscular Endurance

Push past your previous limit. Extends time‑to‑exhaustion by 15‑25% in high‑intensity efforts.

Triathlete cooling off with water, showcasing endurance supported by Stamox beetroot powder

Faster Recovery

Less soreness. Fresher legs. Betalains reduce DOMS and restore explosive power faster between sessions.

Trusted by the best

Three male cyclists on a winners podium celebrating a race, stamox beetroot powder

380w @ 145bpm vs 153bpm

"Stamox has a massive impact on my aerobic efficiency. I can maintain a 380-watt threshold at just 145 bpm, compared to 153 bpm without it. That 8 bpm difference means I’m saving energy when it matters most."

- Arvid Johannesen, Norwegian & Nordic Champion Cyclist

What Athletes Are Saying

Jente Michels

x2 European Champion, Alpecin-Premier Tech Cyclist

"Stamox is the purest beetroot powder on the market. It significantly boosted my power and VO2 max, helping me become U23 European Champion."

Sophie Souwer

X2 World Champion, X3 European Champion, Olympian in Rio and Tokyo

"Stamox allows me to push harder for longer when it counts. It also tastes great, which is a nice change compared to other beetroot products. My lactate threshold jumped from 82% to 88% after using Stamox."

Mathis Desloges

x3 Silver Medals at the 2026 Winter Olympics

"Stamox has been a cornerstone of my Olympic preparation. I truly believe in its ability to optimise performance and expand physical capacity."

Matt Graham

Former GB & NCAA D1 Athlete, Ironman & Running Coach

"An 8-Minute PB at the 2026 London Marathon. The data is clear: improved endurance, stronger cardiovascular output, and noticeably better efficiency."

Mitchell Mulhern

World Champion Team Pursuit

"Achieved my all time best 30min power using Stamox! Then another PB the following week. I take Stamox 2-3 hours pre-ride."

Connor Rogers

Runner - 5km: 14:27 - 10km: 30:22

"Incredible session tonight and the data doesn’t lie. I think I’ve found the missing link with Stamox. HR Efficiency: Averaged 166bpm on the final 3:03/km reps."

Christoff Van Heerden

Head Performance Coach & National Road Champ

“When I am training threshold, I can go longer and faster with Stamox. No other supplement has worked for me, except Stamox.”

Martin Egebjerg Olesen

Danish champion in the marathon, the half marathon & the 10K

"I love Stamox for my running".

Håvard Haukenes

2x Olympian

"I continued using Stamox on the road to the Olympics. I had very good experiences using Stamox as it increases oxygen, blood flow, endurance and focus"

Ilya Podpolny

Kayaker and K9 Biathlon Champion

"Stamox is the ultimate edge for endurance. After a summer of training, I saw a clear difference in my runs—lower heart rate, improved VO2 max, and total control over my pacing."

Sebastian Ziekman

National U20 & U23 10 km Champion

“I use Stamox for my training and racing protocol for that extra edge. It my supports endurance, oxygen efficiency, and recovery. Exactly what a triathlete needs to perform across swim, bike, and run."

Hamza Saeed

Performance Coach

"Stamox is honestly the best product I have ever tried. As someone who’s battled digestion issues forever (and tried every supplement on the market), I am super picky. Stamox gives you health and performance benefits while keeping my GI happy. Stamox has been a game changer for me."

Lars Rørbakken

Strongman and Arm Wrestler

“I’ve been using Stamox for over 10 years and use it on a daily basis. When I compete I get tested regularly for doping, and can trust Stamox 100% on its quality standards.”

2026 Collection

Oversized & Heavyweight T-Shirt Black

$72.00 USD

Stamox Sports Water Drink Bottle

$21.00 USD

Lightweight Racing & Training Vest White

$72.00 USD

Lightweight Racing & Training Vest Black

$72.00 USD

ASSOS x STAMOX Cycling Jersey

$239.00 USD

YOKKAO x STAMOX Shorts

$98.00 USD

STAMOX Sleek Training Tank Top Black

$50.00 USD

Stamox Heavyweight Zip Hoodie – Burgundy

$155.00 USD

ASSOS X STAMOX Custom MILLE Gilet

$199.00 USD

The Stamox Standard "

Not All Beetroot Is Created Equal.

A patented whole-beetroot extract developed in Norway — delivering the complete synergistic profile of nitrates, betalains, and betaine. Developed by Dr. Nils Reither during 2007.