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Home / Shop / SiS (Science In Sport) / SIS BETA Fuel 80 Energy Drink Mix

A single black sachet of Sis Science by Sport Beta Fuel energy drink powder, labeled Orange, centered on a light gray background.

Person pouring a powder from a black 'SIS' container into a white bottle.

A single black sachet of Sis Science by Sport Beta Fuel energy drink powder, featuring red berry flavor, centered on a light gray background.

Black energy drink package with 'SIS' branding on a white background

A display box of SIS Beta Fuel dual source energy drink packets in orange flavor, shown on a clean light gray background.

A display box filled with SIS Beta Fuel dual source energy drink packets in Strawberry & Lime flavor, shown on a light gray background.

A display box of SIS Beta Fuel dual source energy drink packets in Red Berry flavor, shown on a clean light gray background.

Six black SIS Beta Fuel energy drink pouches arranged in two rows of three on a light gray background. The top row features Orange and Red Berry flavors, while the bottom row features Strawberry & Lime and Red Berry flavors.

SiS

SIS BETA Fuel 80 Energy Drink Mix

~~£3.00~~ £2.40 / Sale

Your bottle, fully loaded — SiS BETA Fuel 80 delivers 80g of dual-source carbs in one drink mix, using a 1:0.8 ratio to help you fuel long sessions, races and high-output endurance efforts with less faff.

Quantity Size: Single Serve

Single Serve Pack of 6 Box of 15

Flavour: Orange

Orange Red Berry Strawberry & Lime Mixed

Product variants

In Stock. Next day delivery available.

Quantity

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The SiS BETA Fuel 80 Energy Drink Mix is a high-carbohydrate sports drink designed to support endurance performance during long training sessions and races. Delivering 80g of carbohydrate per serving, it provides a convenient fuelling solution for runners, cyclists and triathletes tackling demanding efforts lasting over two hours.

Formulated with a scientifically developed 1:0.8 ratio of maltodextrin to fructose, this dual-source carbohydrate drink helps athletes meet higher fuelling demands during prolonged exercise. Its isotonic formula mixes easily with water, offering a practical alternative to relying solely on energy gels or chews. Ideal for marathons, long-distance cycling, triathlons and endurance events, SiS BETA Fuel 80 helps you maintain a consistent carbohydrate intake when it matters most.

Product Specifications

Nutritional Information

Serving Size: 1 sachet (82g)

Typical values per 100g / per 82g sachet

Energy – Orange: 1637kJ / 385kcal · 1343kJ / 315kcal
Energy – Red Berry & Strawberry & Lime: 1650kJ / 388kcal · 1353kJ / 318kcal
Fat: 0g / 0g
Of which saturates: 0g / 0g
Carbohydrate: 98g / 80g
Of which sugars: 42g / 35g
Protein: 0g / 0g
Salt: 0g / 0g

Ingredients

Orange: Maltodextrin (57%), fructose (42%), flavourings.

Red Berry: Maltodextrin (56%), fructose (42%), flavourings.

Strawberry & Lime: Maltodextrin (57%), fructose (42%), flavourings.

Allergen Information

Produced in a facility that also handles milk.

For mixed packs, refer to the individual sachets for flavour-specific ingredients and allergen information.

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.