SiS

SiS GO Isotonic Energy Gels

£1.75 £1.25 Sale

22g of carbohydrate in a convenient isotonic gel that can be taken without extra water during training or racing.

Quantity Size: Single Serve
Flavour: Orange
In stock
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SiS GO Isotonic Energy Gels provide a convenient source of carbohydrate for runners, cyclists and endurance athletes during training and competition. Each 60ml sachet delivers 22g of carbohydrate in a ready-to-consume gel, making it straightforward to top up energy during longer efforts.

The maltodextrin-based isotonic formula can be taken without drinking additional water alongside the gel, although regular hydration remains important. With a smooth consistency and portable sachet format, GO Isotonic gels are easy to carry and use when moving, whether you are preparing for a race or following a structured fuelling plan on a long session.
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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