SIS (Science In Sport)

SIS (Science in Sport) is a British sports nutrition brand trusted by elite athletes and professional teams worldwide. With isotonic gels, electrolyte drinks, and cutting-edge formulas, SIS delivers the nutrition that powers champions.

Elite Athlete Nutrition

Science in Sport supplies nutrition to over 100 professional sports teams and athletes, including Tour de France cycling teams. The brand pioneered isotonic gel technology—gels that can be consumed without water because they're already at the same concentration as body fluids. This innovation exemplifies SIS's commitment to advancing sports nutrition.

SIS Products at Medpak

At Medpak, we offer SIS's elite range. GO Isotonic Energy Gels come in Apple, Fruit Salad, Lemon-Lime, Orange, Pink Grapefruit, and Tropical Fruit—available individually or in 10-piece boxes. These isotonic gels require no water and provide fast energy during exercise.

Beta-Fuel + Nootropics Gel Apple combines energy with cognitive support for demanding events. GO Electrolyte Powder provides comprehensive hydration for training. Hydro Electrolytes effervescent tablets offer convenient hydration support.

Why Choose Science in Sport

SIS delivers British elite sports nutrition trusted at the highest levels of competition. The brand's isotonic technology is proven with champions. For athletes seeking professional-grade nutrition, SIS provides the science that powers winners.