Lab-verified from a professional cross-country skier.

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Metabolic tracking demonstrated a clear upward shift in fat-burning efficiency, actively conserving vital glycogen stores during long-distance efforts.

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Cyclist Marco V. recorded significantly lower working heart rates while fully maintaining identical endurance power outputs.

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Ultra-endurance cyclist Jack Billyard elevated his threshold capacity from 4.48 to 4.60 W/kg across a 6-week protocol.

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“Tests show that Stamox can increase performance at both VO2 max durations, but also longer durations” says CTEF Performance Graduate Jordi Salvadó 

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Norwegian & Nordic Champion Cyclist

"Yesterday I did 30 minutes at 88% of my max heart rate without it feeling too crazy or too hard. It wouldn't have been possible without Stamox!"

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RCS French Cyclist

"Same LT2 workout, 4 weeks apart: +10 watts, -10 bpm over 8 minutes. The results are clear."

Elite Cyclist, 30 Hill Climb Wins, 2x NES Champion

"I've genuinely noticed a difference in how I can sustain efforts since using Stamox. It's become part of my routine — I love the powder."

Norwegian Cyclist

"Stamox is really the best product on the market. You get a boost you cannot compare with something else. The tank never emptied today — riding at the front on high wattage like it was nothing."

x2 European Champion, Alpecin-Premier Tech Cyclist

"The purest beetroot powder on the market. Boosted my power and VO₂ max — helped me become U23 European Champion."

Italian Cyclist

"Resting HR dropped from 43-45 to 36-40 BPM. Higher watts, lower RPE."

Cyclist

"My heart rate on the same wattage level dropped around 15 bpm — which in my opinion is crazy."

Gravel Cyclist, Record Holder for the 351km King Alfred’s Way course.

"I re-tested my 12-minute max and saw a 2.6% increase from 448 to 460 watts, which is a serious performance jump."

Spanish Cyclist, CTEF Performance Science, Race Ready Cycling Training Coach

"Stamox has been a game changer. I personally think Stamox is the most interesting supplement to consider when trying to boost endurance performance."

Ultra Cyclist from Corsica

"Frankly unbelievable. I continue my treatment and keep the miles."

Cyclist, Coach and Physical Education & Movement Sciences UGen Student

"Wow, I took Stamox for the first time today before my race and I was sooo good! It gave me a big boost during both the national time trial and road championships."

Danish Mountain Biker

"I used the Stamox here in Italy, and Stamox made Italy’s high-altitude cycling a breeze—no air difference struggles! My friend felt the same. Total game-changer on the steep climbs here".

Norwegian Cyclist

"Having used Stamox consistently throughout the winter, I am now at the peak of my personal performance. I had to hold back during intervals."

Scottish Cyclist

"First time trying Stamox tonight, smashed my 30 minute PR by 8% and took the road bike win in the process!"

Retired Pro Athlete

"I am super satisfied with Stamox. For harder trainings, VO2 max and FTP intervals I use 2tbs. I love the taste in the morning before training and sometimes use it at work for longer nights. I used Stamox at Dolomiti Superbike last weekend, also UCI marathon 120km 3500 asc. I took Stamox before the start of the race and seemed to work well! 2. overall amateurs, and 23. in elite"

Swedish Cyclist

"Nutrition for a 7h race. Stamox before + leading in — better oxygen use, less fatigue."

x2 British Champion

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Italian Cyclist

@omarvargiu →

Cycling Coach

IRONMAN 6x, Champion long distance 25-29 2025, Overall EagleXMan 2025IRONMAN ITALY, AG 18-24- 9h 26'

“From the first few times I used Stamox, I felt like my heart rate was 5-6 bpm lower at the same intensity!”

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AG Ironman Champ, KONA 2026 Qualifier

"Been using Stamox for over a year. 2 tbsp daily for 5 days before winning Ironman South Africa AG."

Multiple World Champion & Undefeated Norwegian Champion in Winter Triathlon

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

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Ironman

"Been using Stamox Beetroot extract powder for a week now and I can't fault it. A natural endurance booster, with extensive research and development carried out in Norway. The product increases blood flow, oxygen efficiency and reduces fatigue .. for everyone training triathlon it's a big win! It's proven to increase power output in watts and VO2 max. I highly recommend using it".

Elite Athlete

“Optimizing performance and recovery is everything. Stamox gives me that natural boost to push harder and bounce back quicker. It’s how I stay at the top of my game.”

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Triathlete Competing Internationally. 19th at the Junior (U20) World Champs this year as a U18.

“Integrating Stamox into my training and racing protocol for that extra edge - supporting endurance, oxygen efficiency, and recovery. Exactly what a triathlete needs to perform across swim, bike, and run.”

World Cup 3rd Place Italian Record, 3x IRONMAN 140.6

"I absolutely love Stamox! I can clearly feel the difference: less muscle fatigue and tiredness. This has led to improvements in performance!"

Triathlete and Personal Trainer

“When training towards big goals, it’s all about structure, consistency – and having enough energy to perform. Stamox has helped me with exactly that. I feel like my body responds better, especially on longer and tougher sessions, and I’m able to maintain intensity without that heavy-legged feeling. It gives me that little extra boost to get more out of every workout – and it’s now a regular part of my pre-session routine for both running and cycling.”

Italian Triathlete, IM 70.3 World Championship Qualifier 2025 & Pure Club Advisor

Ironman

"Before I started using Stamox, my morning sessions were always a struggle. I felt slow, and it felt like my circulation and energy just hadn't kicked in yet. I really struggled to get my body moving. Since I started taking it an hour before my session while I'm waking up, there’s been a massive difference. I’m performing so much better now."

An Officially Affiliated @BritTri. Britain’s First Recovery-Led Triathlon Club

Partners with Stamox. The partnership aligns with the same principle that guides Unbroken: durability over bravado, consistency over spikes and sustainable adaptation over shortcuts.

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5km, 10km, 21km Distance Runner

“I really like Stamox, it’s amazing. When I use it I feel relaxed, and get quicker without feeling fatigue. My pace is completely different when I use it. I have more energy to push harder at the end of my workout or race.”

Run Coach and Athlete

“I’m targeting 2:18 in London and need every 1 % I can get. I have been using beet powder for a while and believe it makes a real difference."

Runner & Coach

"Genuinely love using Stamox as part of my training"

Runner, working towards a sub 2:40 marathon

"I scored a nice PB last Sunday at a 10km (34:28). I got just over a week of trialing Stamox which worked very well. No GI issues like with competitor brands I've used in the past. Noticing my HR and recovery has improved slightly too so nice job! Look forward to using it more and more!"

Trail Runner & 13th at Golden Trail Series 2025. 29:56 10km at Santa Pola.

One of Finland’s most promising trail runners uses Stamox to boost his performance naturally.

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Runner - 5K -14:27 10K -30:29

"Very good session tonight—I think I’ve found the missing link with Stamox. I'm seeing an effect already 2-3 hours after consumption.

Ran 1k reps in 2:58 and 400m in 68s, but the crazy part was the heart rate. It was way lower than normal, staying right in the threshold range. Averaged 166bpm on the last two reps at 3:03/km. It’s allowing me to train harder, perform longer, and recover faster."

2x World Champion, 2x Olympian, 3x European Champion

"Lactate threshold from 82% to 88%. I can push harder for longer."

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Norwegian Rowing Champion

"VO₂ max from 72.1 to 76.6 in 4 months. A jump that big is highly unlikely through training alone."

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National & International Rower

"Less exhausted during tests. Recovered quicker. Better sessions on the water."

Norwegian Biathlon Athlete

Now I've tested Stamox for a good period of time, and I'm very satisfied with the product so far. I've used it in all competitions this autumn, as well as in interval training sessions that are a bit later in the morning. I notice that Stamox helps improve performance and secure those last crucial percentages. It's also something I will definitely use even more on competition days and during intervals in the future. I've only experienced better performance during intervals and in some test runs where I've achieved better times this autumn.

Norwegian Biathlete

"I rely on Stamox to naturally and holistically support my body in everyday life and during intense training. Using it before every session controls my heart rate, my energy remains steady, and I recover faster with less muscle fatigue. I love the taste, the colour and how it supports my entire body. Stamox isn’t just about performance; it’s about giving my body a mindful boost to thrive under pressure. For me, it’s become essential—the “extra” that makes a difference."

2x Norway Cup Champion

“Stamox helped lift me to a new PB on my VO2 test. It’s become something I will definitely continue using in my training and racing.”

Hydrox Athlete, IMMAF MEDALIST and IFMA MEDALIST

"Absolutely class I do feel the benefits major. And the taste is great. So much better then the beetroot shots you can get."

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1st Place HYROX Utrecht Pro Solo & Qualified for World Championships

“As a Pro HYROX athlete, Stamox has become a daily staple in my nutrition”

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Spain Rugby 7s Athlete

Stamox boosts stamina and supports explosive power output for training and games.

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Professional football player for Annan Athletic and Director of Quitongo Football Academy

"Love Stamox's beetroot extract powder. The benefits of the powder are unbelievable. Have noticed a massive difference since we have been using Stamox and would encourage everyone to start their Stamox journey."

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Professional Football Coach

UEFA licensed Coach, previous football player at Tottenham FC and Northampton Town FC. Dukesys coaches the likes of Tom Huddlestone and Jacob Ramsey.

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Kayaker and K9 Biathlon Champ

"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."

x26 French National Champ, 3rd World & European Champ Kayaker

Koch relies on Stamox to elevate his performance on the water. Leading up to the French National Championships, Koch followed a 7-day Stamox loading protocol, which helped him secure all the medals.

French Champion & Top 4 World Junior

From the French Champion podiums to the top of the world junior rankings, every second counts. Pro Speed Skater Germain Deschamps uses Stamox to get that natural edge to push harder, and recover faster.

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Italian National Team, International Speed Skater & National Record Holder

Getting that extra 1% because in 2026, every percent counts. In a sport decided by hundredths of a second, Stamox gives you the physiological edge to push harder, stay lower, and finish faster.

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Former Team Wales and GB Boxer

"Stamox is my secret weapon. My VO2 max was 61 last camp.

Especially in high-intensity sports like boxing, using Stamox makes breathing feel significantly easier. It also greatly enhances recovery between rounds. As I train fasted in the mornings, Stamox is perfect for supporting my recovery. Plus, it's super easy to mix with yogurt or other foods."

Pro Boxer trained by Rendall Munroe. Midlands Area Super Flyweight Champion

Former Team Wales and GB Boxer 

"Stamox is my secret weapon. My VO2 max was 61 last camp."