10X more carbs

One SISU ENERGY GEL contains 300g of carbohydrates — ten times more than traditional gel packs — and lasts for up to 5 hours of training and competition.

Buy Now

10X Less Waste

One SISU ENERGY GEL replaces ten traditional gel packets — ten times less plastic waste on the trail with every long performance.

Buy Now

ZERO DROPS

We developed an innovative custom pouch that you can place directly into your running vest. The pouch comes standard with an integrated silicone-molded suction cap, which dispenses gel naturally and easily.

The resealable nozzle with a silicone valve ensures perfect control and prevents spillage. No sticky hands, wasted gel, or interruptions.

Buy Now

1 : 0.8 | glucose: fructose

We always utilize the latest scientific data. The glucose-fructose ratio in the products is 1:0.8, so you can maximize carbohydrate utilization and maximize your energy production

Scientifically developed with a 1:0.8 glucose-fructose ratio to satisfy both SGLT1 and GLUT5 pathways simultaneously, allowing you to meet your carbohydrate intake target, improve your energy production, enhance carbohydrate utilization, and limit gastrointestinal discomfort.

Buy Now

Light on the stomach

In addition, we only use DE10-level maltodextrin to ensure maximum absorption and optimal gastric function of the product.

SISU ENERGY GEL is made with maltodextrin DE10 — the longest chain maltodextrin that fully dissolves in gel form. Its osmolality is only 133 mOsm/kg, which is less than half the osmolality of blood. This keeps gastric emptying fast, absorption efficient, and the digestive tract calm during intense exercise and competition.

Buy Now

SCIENTIFICALLY SUPERIOR

  • Maltodextrin is not just one product

    Most athletes do not know that maltodextrin is a whole range of products with different structures and different effects on the body. The difference is measured by dextrose equivalent — DE for short.

    The DE value ranges from DE3 to DE20, where the chains are progressively shortened. The higher the DE number, the higher the osmolality.

    N² FUEL SISU ENERGY GEL uses maltodextrin DE10 — the optimal point where the chains are long enough to keep the osmolality low, but soluble enough to achieve a gel form.

  • Osmolality: why it matters

    Osmolality measures the amount of dissolved particles in a liquid. Blood osmolality is approximately 285–295 mOsm/kg. When the gel or drink you consume has a higher osmolality than this – i.e. is hypertonic – your gut draws water into itself to balance the situation. The result: bloating, cramps and slower gastric emptying.

    The maltodextrin fraction in N² FUEL SISU ENERGY GEL produces approximately 133 mOsm/kg – less than half of blood osmolality. This keeps gastric emptying fast and the gut calm even during intense exertion.

  • Why 1:0.8 is better

    For a decade, the standard for sports nutrition was a 2:1 glucose-to-fructose ratio. This was based on research showing that two transporter proteins—SGLT1 for glucose and GLUT5 for fructose—enabled higher absorption than either alone. However, with a 2:1 ratio, the SGLT1 pathway becomes saturated at around 60 grams per hour. Above that, additional glucose increases osmotic load without benefit.

    Newer research has shown that a 1:0.8 ratio is more effective. It balances both pathways more optimally—allowing for 80-120 grams of carbohydrate intake per hour without overload. This is crucial for hourly intakes of over 60 grams, where fuel for ultramarathons and long races is delivered.

  • Bowel training

    High carbohydrate intake does not happen overnight. The first few times an athlete consumes 60–90 grams per hour, the gut may protest — with bloating, nausea, or stomach pain. This is normal and temporary.

    Studies show that the gut adapts with training. The transporter proteins SGLT1 and GLUT5 increase with repeated exposure. Gastric emptying speeds up. GI symptoms decrease. This is called gut training — and it is part of adopting N² FUEL SISU ENERGY GEL just like any physical training.

    Start with 30–60 grams per hour in training. Increase gradually. Give your gut time to adapt before a race.

1 4
Buy Now