SiS

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Elevate your performance with SiS (Science in Sport), the trusted leader in endurance nutrition. From SiS gels and refreshing electrolyte tablets to high-quality protein powders, every product is designed to help you train harder, perform better, and recover faster.

Stay hydrated and strong with SiS electrolyte tablets, formulated to replace essential minerals lost through sweat during intense sessions. Need quick, effective energy? SiS running gels and classic SiS gel products deliver fast-absorbing carbohydrates for sustained fuel, helping you push through long runs, rides, or races without hitting the wall.

After training, SiS protein powders provide the nutrients your muscles crave for recovery and growth, so you’re always ready for your next challenge. SiS nutrition ensures every moment of your performance counts. Shop now and fuel every stage of your athletic journey.

SiS products are developed by sports scientists with input from elite athletes, rigorously tested, and all batches are screened against the World Anti-Doping Agency (WADA) list for safety and efficacy.

SiS gels use maltodextrin and fructose in a 1:0.8 ratio, which enhances energy efficiency and reduces the risk of gastrointestinal issues.

Yes, SiS products like energy gels, drinks, and chews provide fast-absorbing carbohydrates specially formulated for sustained energy release during long-duration sports.

SiS GO Electrolyte contains carbohydrates and electrolytes, best for events longer than 90 minutes, while SiS GO Hydro is primarily for hydration with low carbohydrates, ideal for hot weather.

Yes, SiS provides recovery products like REGO Rapid Recovery which combines protein and carbohydrates to replenish glycogen and support muscle repair post-exercise.

All SiS products are certified under the Informed Sport program, ensuring they are free from any banned substances, making them safe for competitive athletes.

SiS gels come in a variety of flavours including orange, strawberry, lime, and others to offer taste variety for endurance athletes.

SiS isotonic gels are designed to be stomach-friendly and do not require extra water for absorption, but hydration is still recommended during activity.​

SiS offers tailored products suitable for various endurance sports including cycling, running, triathlon, and team sports, supporting specific energy and recovery needs.

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