SiS GO Isotonic Energy Gel

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Stay fuelled and performing at your best with the original SiS GO Isotonic Energy Gel. Designed to provide fast, easily digestible carbohydrates without the need for water, it’s a convenient and effective energy source for training, racing, and endurance events.

Trusted by elite athletes around the world, SiS GO Isotonic was the world’s first isotonic energy gel and remains one of the most popular fuelling options for runners, cyclists, triathletes, and endurance athletes.

Why You’ll Love It

• Delivers 22g of fast-absorbing carbohydrate per gel
• No water required thanks to its isotonic formula
• Provides 87 calories of quick energy
• Easy to digest and gentle on the stomach
• Compact, lightweight packaging that’s easy to carry in your pocket, race belt or vest
• Ideal for running, cycling, triathlon, trail running and other endurance sports

How It Works

During prolonged exercise, your body’s carbohydrate stores gradually become depleted, leading to fatigue and reduced performance. SiS GO Isotonic Energy Gel provides a rapid source of carbohydrate that is absorbed quickly, helping to maintain energy levels, support performance and delay the onset of fatigue.

Unlike many traditional energy gels, the isotonic formula is designed to be absorbed without the need for additional water, making it an ideal choice when convenience and speed matter most.

Key Features

• 22g carbohydrate per serve
• Fast-absorbing isotonic formula
• No additional water required
• Supports endurance performance
• Helps maintain energy levels during exercise
• Easy-to-carry single-serve sachet

Suitable For

• Vegans
• Vegetarians
• Gluten Free
• Wheat Free
• Lactose Free
• Nut Free
• Soya Free

Informed Sport Certified

Every SiS product is developed under strict quality standards and is Informed Sport Certified, providing confidence that each batch has been tested for banned substances and is suitable for competitive athletes.

Perfect for: Marathons, ultras, trail running, road running, cycling, triathlon, HYROX, hiking, and any endurance session where quick, reliable energy is essential.