SIS Science In Sport

They pioneered the first isotonic energy gel that delivers 22 g of fast-absorbing carbohydrates without needing water and introduced their high-carb Beta Fuel range that supports intakes up to 120 g/hour—empirically shown to improve endurance power output. With a suite of products including energy gels, chews, hydration tablets, drink mixes, bars, and recovery powders, each product is screened to WADA standards and Informed-Sport certified, making SiS a trusted partner of elite teams like INEOS Grenadiers and over 320 professional squads. We recommend SiS for cyclists who demand reliable, scientifically validated fueling solutions for training and racing. Their thoughtfully formulated nutrition supports performance, aids recovery, and ensures clean sport compliance—perfect for serious cyclists pushing the limits of endurance.