C.O1 Carb Electrolyte Chew | Berry
C.O1 is our first on-the-go carb product. A chew for the sessions when gels feel like punishment and bars are too much to deal with. One strip, six chews, slots in a pocket.
Sampling Now, Launching in
Proven Carbs. Built for Endurance
C.O1 Carb Chews are scientifically formulated chewable carbohydrate cubes designed to fuel your endurance and sustain mental and physical performance. With our 2:1 glucose-to-fructose blend and 100mg of sodium per strip, they are ideal for steady energy delivery during long training sessions, races, and any effort where you need clean fuel that won't upset your stomach.
Clean Ingredients. Real Results.
At GONNA, we cut the crap out of sports nutrition. That's why we develop and test every C.O1 chew alongside real pro athletes, with formulations led by science. No fluff, no fillers, no guesswork. Just honest fuel, proven in training, on the start line, and at the finish.
Ingredients
Sugar, glucose syrup, thickener (pectin), natural flavouring, acids (lactic acid, citric acid), flavour enhancer (maltodextrin), colouring food (black carrot concentrate), glazing agent (carnauba wax).
Allergens: Gluten-free in line with Regulation (EC) 828/2014. Contains sulphur dioxide (SO₂) below 10 mg/kg — exempt from allergen declaration under Annex II of Regulation (EC) 1169/2011.
Nutrition information
Per 100 g · Per 25 g portion · RI %
- Energy — 1398 kJ / 329 kcal · 350 kJ / 82 kcal · 4 % RI
- Fat — < 0.5 g · < 0.5 g · 0 % RI
- of which saturates — 0.2 g · < 0.1 g · 0 % RI
- Carbohydrate — 80 g · 20 g · 8 % RI
- of which sugars — 65 g · 16 g · 18 % RI
- Fibre — 2.0 g · 0.5 g
- Protein — < 0.5 g · < 0.5 g · 0 % RI
- Salt — 0.51 g · 0.13 g · 2 % RI
- Sodium — 203 mg · 51 mg
- Potassium — 157 mg · 39 mg
- Calcium — 9.8 mg · 2.5 mg
Reference Intake (RI) for an average adult: 8400 kJ / 2000 kcal. Source: Matthijs B.V. product specification 610A, v.1 (28-05-2026).
Fuel Guide
One strip = 6 chews = 20 g of carbohydrates and 51 mg of sodium.
Aim for:
30–60 g carbs per hour for sessions up to 2.5 hours → 1.5–3 strips per hour.
60–90 g carbs per hour for sessions longer than 2.5 hours → 3–4.5 strips per hour.
Chew slowly with a sip of water or D.O1 drink mix to support absorption. Pair with D.O1 for full electrolyte coverage.
Introducing C.O1
Hey There,
First of all, thank you for being one of our testers. It means a lot that you're willing to try something new and help us make it better.
We'd love to hear what you think. How did it feel during your workout or race? How was the taste, the texture, the timing? Anything that stood out, good or bad, is useful to us.
If all is positive please leave a formal review by pressing the black review button.
Otherwise, please fill in the form below with your feedback so we can change things that need to change before we launch.
Thanks again. We're very grateful for your time and help.
Bas & Tom
The Problem
Most athletes under-fuel. Not because they don't know better.
Gels have been the default for decades. But often sticky, weird textures, and gone in one gulp. They make fueling feel like a chore. So athletes skip doses, take less than they should, and pay for it in the final kilometres.
Under-fueling isn't a knowledge problem. It's a product problem. If your nutrition isn't something you actually want to take mid-effort, you won't take enough of it. And when carb intake drops, so does everything else.
We built C.O1 to change that.
The Science
45g of carbs. Two absorption pathways. One strip.
Most carb products rely on a single sugar source, which means your gut hits a ceiling around 60g per hour, no matter how much you take.
C.O1 uses a 2:1 glucose-to-fructose ratio, engaging two completely separate intestinal transport pathways at once. More fuel absorbed. Less left sitting in your gut.
Each strip delivers 45g of fast-absorbing carbohydrates and 100mg of sodium to support fluid balance and normal muscle function.
The Format
Pocket-sized. Actually enjoyable. Built for the long effort.
We tried everything out there. Gels that taste like cough medicine or have weird textures, gummies that stick to your teeth for the next ten kilometres and taste too chemical or where you need to eat 20 to get a decent carb amount.
Products that technically work but make every fueling moment something to dread.
So we made our own.
A chewable strip with a clean berry flavor that doesn't linger, doesn't overwhelm, and doesn't get in the way of what you're actually doing.
No artificial additives. Vegan, gluten-free, and made in The Netherlands.
One strip. Everything you need to keep going.
I have more to say
Amazing, thanks so much for taking the effort and helping us create a better product.
Please fill in the form so we can merge all of the feedback.