Ideal for endurance cyclists, triathletes and event-focused riders who need a measured high-carbohydrate drink for sessions lasting more than two hours.
SIS Beta Fuel 80 is a dual-source energy drink powder designed for prolonged endurance exercise. Each single-serve sachet provides 80 g of carbohydrate from maltodextrin and fructose in a 1:0.8 ratio, giving you a practical way to carry substantial carbohydrate in drink form rather than relying solely on gels or solid food.
Add one sachet to 600 ml of water, shake until dissolved and sip little and often throughout your session. The isotonic, neutral-pH formula is designed to support carbohydrate delivery, while the 1:0.8 blend has been associated with greater carbohydrate oxidation and less reported stomach fullness than a traditional 2:1 blend. It is a convenient option for riders who prefer drinking their fuel and want a clearly measured serving each hour.
One sachet per hour supplies the base 80 g target; add SIS Beta Fuel gels or Chew Bars if you are aiming towards 80–120 g of carbohydrate per hour. The drink contains no salt, so plan your sodium and electrolyte intake separately for longer or hotter rides. The powder is Informed Sport certified, and the strawberry-and-lime flavour gives the mix a distinct fruit flavour rather than a completely neutral taste.
80 g carbohydrate per sachet
A clearly measured serving makes it easy to plan your hourly intake during long training rides and races.
1:0.8 dual-source formula
Maltodextrin and fructose provide carbohydrate from two sources, with published comparisons reporting improved oxidation efficiency versus a 2:1 blend.
Mix-and-go serving
Empty one sachet into 600 ml of water, shake until dissolved and carry it in your bottle.
Isotonic, neutral-pH formula
Designed as a drinkable fuelling solution for sipping throughout prolonged exercise.
Flexible fuelling strategy
Use one sachet per hour or add Beta Fuel gels and Chew Bars when targeting 80–120 g of carbohydrate per hour.
Strawberry & Lime flavour
A fruit-flavoured option for riders who prefer variety in their bottle.
Informed Sport certified
Batch-tested supplement certification provides additional reassurance for competitive athletes.
Plan electrolytes separately
The powder contains no salt, so pair it with a suitable sodium or electrolyte strategy for longer rides and hot conditions.
General
Nutrition per 100 g
Nutrition per 82 g serving
Ingredients
Usage
Certification
BETA Fuel 80 dual-source formula
Combines maltodextrin and fructose in a 1:0.8 ratio to provide fast-release and sustained carbohydrate energy for longer endurance sessions.
Isotonic, neutral-pH formula
Mixes with water to create a convenient drink designed to support carbohydrate delivery while helping minimise gastrointestinal discomfort.
Informed Sport
Provides independent supplement testing for prohibited substances, including screening against the World Anti-Doping Agency banned-substance list.
SIS is a sports nutrition brand founded in 1992 and focused on fuelling endurance and high-intensity exercise. It is known for developing practical carbohydrate, hydration and recovery products for athletes.
SIS introduced what it describes as the world's first isotonic energy gel, designed to provide carbohydrate during exercise without requiring additional water. The GO isotonic gel range subsequently received the Queen's Award for Enterprise.
