SiS

SiS GO Isotonic Energy Gels

£1.75

Fast, stomach-friendly energy for training, racing and endurance performance. SiS GO Isotonic Energy Gels deliver 22g of quick-release carbohydrate in an easy-to-take gel that can be consumed without water.

Quantity Size: Single Serve
Flavour: Orange

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Key Benefits

  • 22g carbohydrate per gel to support fast-acting energy during exercise
  • Isotonic formula can be taken without additional water
  • Ideal for running, cycling, triathlon and endurance sports
  • Easy to digest with a light, smooth texture
  • Convenient on-the-go fuelling for training, racing and long-distance events
  • Compact sachet design fits easily into pockets, belts or kit bags
  • Trusted sports nutrition from SiS Science in Sport

SiS GO Isotonic Energy Gels are a fast, convenient and easy-to-digest fuelling option for runners, cyclists, triathletes and endurance athletes. Designed to deliver quick energy during training and racing, each gel provides 22g of carbohydrate to help maintain performance when your energy levels start to drop.

The isotonic formula means SiS GO Energy Gels can be consumed without the need for additional water, making them ideal for long runs, bike rides, gym sessions, sportives, marathons, triathlons and race-day fuelling. Their smooth, light texture is designed to be gentle on the stomach, helping reduce the heavy, sticky feel often associated with traditional energy gels.

Compact and easy to carry in a running belt, cycling jersey pocket or gym bag, SiS GO Isotonic Energy Gels are a reliable choice for on-the-go sports nutrition. Whether you are preparing for an endurance event or need a practical carbohydrate gel for regular training, SiS GO Gels help you fuel consistently, perform for longer and stay focused when it matters most.
Product Specifications

Blackcurrant

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Apple

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Cherry

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Fruit Salad

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Lemon & Lime

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Orange

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Pineapple

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Pink Grapefruit

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).

Tropical

  • Energy: 613kJ / 144kcal per 100ml | 368kJ / 87kcal per 60ml serving
  • Fat: 0.1g per 100ml | 0g per serving
  • Of which saturates: 0g per 100ml | 0g per serving
  • Carbohydrate: 36g per 100ml | 22g per serving
  • Of which sugars: 1.0g per 100ml | 0.6g per serving
  • Protein: 0g per 100ml | 0g per serving
  • Salt: 0.01g per 100ml | 0.01g per serving
  • Ingredients: Water, Maltodextrin (33%), Flavouring, Gelling Agents (Gellan Gum, Xanthan Gum), Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid).
Why We Choose SiS

We choose SiS - Science in Sport because they create trusted sports nutrition products designed to help athletes fuel, hydrate and recover with confidence. From isotonic energy gels and electrolyte tablets to recovery drinks and advanced endurance fuelling, SiS supports runners, cyclists, triathletes and active individuals before, during and after training and racing.

Science-Led – Developed with a clear focus on sports science, performance nutrition and real-world athlete needs.

Easy to Use – Practical fuelling solutions such as isotonic energy gels that are simple to take during exercise, with no unnecessary complexity.

Endurance Focused – Designed to support sustained energy, hydration and recovery across running, cycling, triathlon and high-intensity training.

Trusted by Athletes – Used by everyday athletes and elite performers who need reliable nutrition when performance matters.

That’s why SiS is part of the North Sports collection — giving you proven sports nutrition to fuel harder sessions, support recovery and perform at your best.
Quantity Size: Single Serve
Flavour: Orange

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