SIS Go Isotonic Energy + Caffeine Gels

SiS GO Energy + Caffeine Gels – Fast Energy with a Powerful Boost
The original GO Energy Gel by Science in Sport (SiS) changed the endurance game — delivering quick, easily digestible carbohydrates to keep your energy levels high. Now, SiS GO Energy + Caffeine Gels take it a step further by combining the same trusted isotonic formula with an extra kick of caffeine for enhanced focus and performance.

Instant Energy + Mental Focus
Each gel provides a fast-acting source of carbohydrates for sustained endurance, plus 75mg or 150mg of caffeine to give you a mental and physical edge when you need it most. Designed for cyclists, runners, and endurance athletes, these gels help you stay sharp and strong from start to finish.

Clean Taste, Easy Digestion
Unlike many energy gels with a bitter caffeine aftertaste, SiS GO Energy + Caffeine Gels have a clean, refreshing flavor and are gentle on the stomach. Thanks to their isotonic formula, you can take them without additional water, avoiding that heavy or sloshy feeling mid-ride or race.

Why Choose SiS GO Isotonic Energy Gels?

• Isotonic formula = equal osmotic pressure → easy digestion, reduced stomach distress
• No need for extra water – perfect for long rides, races, or when hydration is limited
• Balanced electrolytes – supports better fuel absorption and hydration
• Smooth texture – easy to consume even at high intensity

The Power of Caffeine in Endurance Sports
Caffeine works by reducing your perception of effort and improving mental alertness — especially useful during long or intense sessions over 90 minutes. It helps delay fatigue, sharpen focus, and sustain energy when your body starts to tire.

Take one gel every 20–30 minutes during rides, runs, or endurance events lasting longer than 90 minutes. Space out caffeine-containing gels with regular SiS GO Isotonic Energy Gels to maintain energy balance and avoid overconsumption.