Developed in Norway and trusted by Olympians, WorldTour cyclists, and Ironman champions since 2007. A stimulant‑free formula of natural nitrates, betaine, and betalains that lowers the oxygen cost of every effort — so you breathe easier, push harder, and hold your pace longer.
Feel the acute peak in 2–3 hours. Real physiological adaptation compounds over 12 weeks. No jitters. No crash. Just cleaner, longer output.
Unlike ordinary beetroot juice, every scoop of Stamox delivers a precise dose of nitrates, betaine, and betalains — the full synergistic matrix used in clinical performance studies.
Verified Quality Standards
19 Years Research
Anti-Doping Tested
Formulated In Norway
200 Grams Per Tub
40 Cardiovascular Servings
1/2 tbs daily for health, energy, & circulation.
20 High-Performance Doses
1 tbs 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
Lowers the oxygen cost of exercise. Hold your target pace longer and push your aerobic ceiling without redlining early.
Extends time-to-exhaustion. Increases peak wattage output and locks in precise pacing deep into late-stage interval blocks with zero speed drop-off.
Pure, low-volume extract that absorbs instantly. Zero stomach cramps or bloating, even when working at 180 BPM.
Active betalains flush cellular waste and suppress muscle inflammation. Wake up with fresher legs, ready to attack tomorrow's build block with maximum capacity.
Stamox Oxy-Plus — Premium Beetroot Extract
Regular price464.00 SEKSale price464.00 SEK
Stamox Oxy-Plus — Premium Beetroot Extract
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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."
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
Backed by the World's Top 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 the same pace.
AIS Group A
Highest evidence tier for sports supplements.
200+
Peer-reviewed human performance studies on nitrate & beetroot.
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. Trusted by Olympians, WorldTour cyclists, and Ironman champions world wide for 19 years. From Norway, for elite performance.
How Stamox Works
Acute effect in 2–3 hours. Loading in 3–7 days. Longevity in 2–4 weeks. Triple‑action matrix: Nitrates · Betaine · Betalains.
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.
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How to Use
Start fuelling with intention. Match your Stamox dose to the session, and watch your data shift.
Tip: Log your Stamox dose and timing in your training diary. You’ll quickly dial in your personal protocol.
01 / Baseline Dose
Mix 1 Tablespoon (~10g) into 500ml water, 2–3 hours before training to optimise daily oxygen economy.
02 / Racing Protocol
Mix 2-3 Tablespoons (~20g-30g) for race days or peak intensity blocks to sustain target wattage.
03 / Versatile Mix
Unflavoured, whole-food matrix. Blends seamlessly into water, smoothies, or any pre-workout stack.
04 / Bio-Activation
Add a squeeze of lemon or lime. Natural citric acid acts as a catalyst to accelerate cellular uptake.
05 / Critical Constraint
Do not use antibacterial mouthwash within 1 hour of dosing. It destroys the oral bacteria required to convert nitrates into active nitric oxide, neutralizing the performance effects.
3 Rules That Separate The Pack
1. Test in training—never debut on race day.
2. Let the data talk—log HR, power, RPE.
3. Save it for the work—Stamox is a multiplier for key sessions and blocks. Offload, then reload.
Training & Race-Day Protocols
Copy a proven plan. See what’s possible.
Yohan Zaradzki
Belgian Marathon Champion 2:12 Marathon · 62:31 Half
"Since integrating Stamox, I’ve hit multiple new PBs. It gives me that extra gear—more explosive leg power and the sustained energy I need."
Hamza Saeed
Performance Coach
"Stamox is honestly the best product I have ever tried. As someone who’s battled digestion issues forever, I am super picky. Stamox gives you health and performance benefits while keeping my GI happy. It's been a game changer."
Mitchell Mulhern
World Champion Team Pursuit
"30‑Minute Power PB with Stamox. Then another PB the following week."
Christoff Van Heerden
National Road Cycling Champion
"When I'm training threshold, I go longer and faster. No other supplement has worked for me, except Stamox."
Lars Rørbakken
Strongman and Arm Wrestler
"I've used Stamox daily for over 10 years. I get tested regularly and can trust Stamox 100% on its quality standards."
Ole-Kristian Kvanli
2x Norway Cup Biathlete Champion
“Stamox helped lift me to a new PB on my VO2 test"
Håvard Haukenes
2x Olympian
"I continued using Stamox on the road to the Olympics - increasing oxygen, blood flow, endurance and focus".
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 of active nitrates 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.
Your Edge Starts Here
Get the free Race Loading Protocol used by Olympians—plus 10% off your first order.
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