£2.55
SiS Beta Fuel Energy Chews deliver 45g of dual-source carbohydrate per 60g chew bar, using the optimised 1:0.8 maltodextrin:fructose ratio. Designed for endurance athletes to reach 80–120g of CHO per hour in block-format fuel form. Built for minimal gut discomfort and consistent energy delivery.
Ingredients (per 60g serving)
Sugar (from glucose syrup)
Water
Glucose syrup (maltodextrin)
Fructose syrup
Gelling agent (Pectin)
Natural flavouring
Acidity regulator (Citric acid)
Corn starch
Glazing agent (Coconut oil, Carnauba wax)
Natural colour (Turmeric extract / carotene)
Nutritional Breakdown (per 60g serving)
Calories: 190kcal (317kJ)
Total Carbohydrate: 45g
Sugars: 41g
Fibre: 2.2g
Fat / Protein: 0g
Salt: 0.11g (40mg sodium)
Suitable for Vegans/Vegetarians?
✅ Yes – Vegan, gluten-free, dairy-free, soy-free. No artificial colours or sweeteners.
Allergen Information:
No common allergens declared
Contains coconut (glazing agent)
May contain traces of eggs, fish, milk, cereals with gluten due to shared equipment
If you’re the kind of person who likes to fuel up on the go, these chews are your new best friend.
You can throw a few in your pocket, and boom – you’ve got an easy, no-fuss source of fuel for your workout or race. The combination of maltodextrin and fructose in each chew gives you a steady release of energy, so you can keep powering through those long sessions without worrying about running out of steam.
Who it’s for:
Trainers, riders, runners, hikers – anyone torching long hours who needs a high-carb snack that’s easy on the gut and easy to chew.
What it does:
Provides 45g of fast-absorbing dual-carb fuel in a chewable block format. The 1:0.8 glucose:fructose ratio supports oxidation rates of up to 1.5g/min while minimising bloating. A great alternative to gels to mix up your fuelling.
How I’d use it:
Chew one block every 30–45 minutes during long sessions – combined with fluids, you’re targeting 80–120g carbs/hour easily. Handy, portable and satisfying.
The Science:
Dual-Transport Carbohydrate Intake Enhances Endurance Performance
Study: Crossover trials comparing glucose-only versus glucose+fructose (1:0.8) intake on exogenous carbohydrate oxidation, performance outcomes, and GI response during prolonged cycling.
Sports Medicine systematic review (2018)
https://pubmed.ncbi.nlm.nih.gov/26373645/
Using maltodextrin + fructose boosts exogenous CHO oxidation up to 1.5g/min with better gut tolerance. SiS Chews employ this formula to maximize fuel delivery and minimize GI issues during long endurance events.
Carbohydrate Feeding Improves Performance Versus Water in Long-Endurance Events
Study: Meta-analysis of multiple trials comparing carbohydrate-fed endurance athletes (via gels, drinks, chews) with water-only groups, examining performance, RPE, and time-to-exhaustion.
Sports Science Review (Bourdas & Souglis) (2021)
Carbohydrate feeding during endurance events improved performance in 90% of studies, with moderate effect sizes. Supports the inclusion of SiS Beta Fuel Chews as a reliable, proven energy format under real-world conditions.
