Developed in Norway and trusted by Olympians since 2007, Stamox Oxy-Plus optimises oxygen utilisation at a cellular level. By reducing the oxygen cost of exercise, it lowers perceived exertion—making sustained paces feel easier so you can maintain a higher power output and push deeper into fatigue.
Unlike high-volume juice, one tablespoon delivers a precise dose for measurable results. Zero fluid load, zero stomach slosh. Predictable oxygen efficiency, every session. Peak activation: 2–3 hours. Pure, stimulant-free performance.
Verified Quality Standards
19 Years Research
Anti-Doping Tested
Formulated In Norway
200 Grams Per Tub
40 Cardiovascular Servings
1/2 tbsp daily for health, energy, & circulation.
20 High-Performance Doses
1 tbsp pre-workout for a measurable 3–5% O₂ saving per session.
"Been using Stamox for a year. Took 2 tbsp daily for 5 days before winning Ironman South Africa AG. "
— GILBERTO NEIROTTI, IRONMAN AG CHAMPION
"I’ve found the missing link in my running. 166 bpm on 3:03/km reps — the data doesn’t lie. "
— CONNOR ROGERS, 5K 14:27 · 10K 30:29
Stamox Oxy-Plus — Premium Beetroot Extract
Regular price460,00 NOKSale price460,00 NOK
Stamox Oxy-Plus — Premium Beetroot Extract
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ATHLETE DATA // USER METRICS
Proven By Athletes. Backed By Data.
-8 BPM
LOWER THRESHOLD HEART RATE
LOG // ARVID J. // NORDIC CYCLIST CHAMP
-8 BPM Threshold Strain
"Stamox has a massive impact on my aerobic efficiency. I can maintain a 380-watt threshold at just 145 bpm, saving vital energy when it matters most."
Arvid Johannesen | Nordic Champion Cyclist
+4.5
VO₂ MAX INCREASE (4 MO)
LOG // THOMAS E. // X2 NATIONAL ROWER CHAMP
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."
Thomas Elholm | x2 National Champion Rower
+2.6%
POWER OUTPUT JUMP
LOG // JACK B. // ULTRA DISTANCE RECORD HOLDER
+2.6% Threshold Elevation
"I re-tested my 12-minute max and saw a 2.6% increase from 448W to 460W—a serious performance jump. Testing also showed near-zero heart rate drift as fatigue set in."
Jack Billyard | Gravel Cyclist & FKT Holder
Backed by Global Research.
"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)
3–5%
Lower O₂ cost at target pace.
AIS Group A
Highest evidence tier (Australian Institute of Sport).
Dietary nitrates convert to Nitric Oxide. Blood vessels relax, lowering vascular resistance and priming your cardiovascular system.
Vasodilation peaks. Highly oxygenated blood is shunted directly to working muscles.
You hold target wattage while burning less oxygen. Natural betaine pulls water into muscle cells, sustaining power output deep into efforts.
Betalains – beetroot’s unique antioxidants – enter circulation. They neutralise oxidative stress and clear metabolic waste, kick‑starting recovery before the session ends.
Consistent use promotes mitochondrial efficiency and up‑regulates biogenesis pathways. Fitter, more oxygen‑efficient, more resilient muscles. No stimulants. No crash.
Trusted by the Best
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."
Jente Michels
x2 European Champion, Alpecin‑Deceuninck
“The purest beetroot powder on the market. Boosted my power and VO₂ max - helping me become U23 European Champion”
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."
How to Use
Start fuelling with intention, and watch your data shift.
01 / Baseline Dose
Mix 1 Tablespoon into water, 2–3 hours before training.
02 / Racing Protocol
Mix 2-3 Tablespoons for race days or peak intensity blocks.
03 / Versatile Mix
Unflavoured, whole-food matrix. Blend into water, smoothies, or any pre-workout stack.
05 / Critical Constraint
Avoid mouthwash, tongue scraping, and breath mints — they kill the bacteria that convert nitrates into nitric oxide. Brush with regular toothpaste only. Sugar-free gum is fine.
Training & Race-Day Protocols
Copy a proven plan. See what’s possible.
Yohan Zaradzki
Belgian Marathon Champion 2:12 Marathon · 62:31 Half
Protocol: 2 tbsp daily for 5 days pre‑race. 3 tbsp on race morning.
Jente Michels
x2 European Champ, Alpecin‑Deceuninck Cyclist
Protocol: 2 servings/day for 10 days before racing.
Connor
Runner 14:27 5km · 30:22 km
Protocol: 1-2 tbsp training days 2 tbsp 5–7 days before racing 3 tbsp race day
Our Story
Dr. Nils Reither, DVM Veterinarian · Utrecht, 1990 · 36 years in industry
Endurance athletes are always chasing oxygen economy. In 2007, that chase led veterinarian Dr. Nils Reither to a humble beetroot extract that measurably improved oxygen utilisation in Norwegian rowers and cyclists. The data was so clear it demanded a product be built.
Independently tested. Free of banned substances. From Norway, for elite performance.
FAQ
You would have to drink a lot of "regular" beetroot juice to achieve a good effect, and the amount you need to drink will vary enormously.
Raw beetroots and commercial juices vary wildly in active nitrate density depending on soil, season, and processing. Because their potency is never standardized or verified, your performance results will be unpredictable.
Furthermore, hitting the clinical threshold required for athletic performance via raw juice requires a massive fluid intake, often causing gastrointestinal (GI) distress before a workout.
Stamox eliminates the guesswork and the fluid load. Our extraction process delivers a precise, standardized dose in every scoop—guaranteeing consistent, predictable oxygen efficiency every time you train.
Stamox has a much lighter consistency and a milder, slightly sweeter flavor than standard, heavy beet powders.
For the smoothest mix, pour your water into the glass first, add the powder, let it sit for 2 minutes, and then stir (or use a handheld frother).
Taste Tip: If you want to mask the natural earthy undertones, mix Stamox with citrus juice (like lemon or orange) or blend it into your favorite fruit smoothie.
Yes, consistent daily use triggers permanent structural upgrades.
While a pre-workout dose provides immediate oxygen efficiency, daily dosing over 3+ weeks promotes mitochondrial biogenesis—meaning your body structurally builds brand-new cellular power plants to increase long-term training capacity.
The nitrate content in Stamox ranges from 1.3% to 1.7%, averaging 1.5% with a +/- 0.2% variance.
That means you're getting around 300 mg of nitrate in just two tablespoons.
However, it's crucial to understand that nitrate is only one component contributing to Stamox's unique benefits. You won't get the same results by simply taking nitrates on their own.
The true power of Stamox comes from the synergistic blend of nitrates, antioxidants and its other natural compounds working together.
Premium Beetroot: Sourced from the highest quality red beetroot.
Patented & Potent: A unique extraction ensures a stable, reliable strength in every batch.
Nutrient-Preserving: Processed to lock in essential micronutrients.
Pleasant & Versatile: A fine powder with a fresh taste for easy dosing.
Do not panic! This is a completely harmless condition called beeturia. It happens because Stamox is highly concentrated and rich in betalains—the vibrant, natural pigments found in beetroot that give it its powerful antioxidant properties. It is temporarily passing through your system and is 100% safe.
Pure red beetroot extract (Beta Vulgaris) and a trace amount of maltodextrin strictly as a technical anti-caking agent.
This is to prevent our highly concentrated active powder from absorbing airborne moisture and turning into a solid block. Stamox contains zero artificial fillers, zero sweeteners, and is anti-doping tested.
It sounds strange, but the magic actually starts on your tongue! The natural conversion of dietary nitrates into nitric oxide relies heavily on the beneficial bacteria in your mouth. Using antibacterial mouthwash or aggressive spitting within 30 minutes of taking Stamox can kill these bacteria, drastically reducing the supplement's effectiveness.
Local Fulfilment
Orders ship locally from our warehouses in the EU, UK, and Norway. No customs. Tracked delivery.
Performance Guarantee
Follow our 12‑Week Protocol: Measurable HR drop or time‑to‑exhaustion improvement — or your money back.
Personal Protocol Support
Race or protocol question? We help you dial it in. Email us at eirin@stamox.com.
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