SIS – Science In Sport

Leaders in Endurance Sports Nutrition, Science in Sport is here to support all of your sports nutrition goals. They’re Energy Gels and Effervescent Electrolyte tablets are particularly popular.

  • A dual-source energy gel with added Nootropics for endurance athletes.
    • Designed as a world-leading, whole body energy source
    • Helps to improve both your physical and mental performance.
    • A 1:0.8 ratio of maltodextrin to fructose 
    • 250mg Cognizin® Citicoline for improved cognitive function
    • 200mg caffeine, 1g Taurine and 200mg Theanine
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  • A dual-source energy source for endurance athletes.
    An optimised 80g of carbohydrate in a single, convenient isotonic fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance.  
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  • A dual-source energy source for endurance athletes.
    • Scientifically superior fuel in unique and satisfying chews.
    • Part of a world-leading fuelling solution range.
    • Easy to consume
    • Delivering 46g of carbohydrate per packet
    • 1:0.8 - GLUCOSE:FRUCTOSE
     
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  • A dual-source energy gel for endurance athletes.
    • Contains 40g dual-source carbohydrate
    • Optimise Carbohydrate Ratio of maltodextrin and fructose
    • Dexigned for longer exercise > 2 hours
    • Scientifically Superior - Greater carbohydrate intake of 80-120g per hour
    • Vegan
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    • 36 grams of carbohydrate per 500ml serving
    • High in sodium to promote hydration
    • Delivers energy and fluid fast
    • Suitable For Vegans
    • Informed Sport Approved
    Contains 1.6kg
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    • Easily digestible
    • Quick supply of carbohydrate for energy
    • 189 calories per serving
    • 47 grams of carbohydrate per serving
    • Designed to be consumed as part of a loading strategy pre-exercise, and during endurance training and racing
    • Vegan
    • Informed Sport Approved
    Contains 1.6kg
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    • Optimum hydration in a convenient format
    • 9 calories per serving
    • Simply add to water to provide a high electrolyte drink
    • High in sodium to help promote hydration
    • Suitable for vegans
    20 tablets per pack
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  • Out of stock
    The GO Isotonic Energy Gel was the world's first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise.
    • 22 grams of carbohydrate per gel.
    • 87 calories per serving
  • Sale!
    The GO Isotonic Energy Gel was the world's first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise.
    • 22 grams of carbohydrate per gel.
    • 87 calories per serving
    Best before end of September 2025
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    • High quality blend of carbohydrate (22g), protein (20g) and electrolytes with vitamins and minerals
    • 184 calories per serving
    • Designed to be consumed within 30 minutes post-exercise
    • Informed Sport Approved
    Select options This product has multiple variants. The options may be chosen on the product page Details Quick View