£2.95
SiS Beta Fuel 80 Energy Drink Mix provides a massive 80g of carbohydrates per 82g sachet, delivered at the optimised 1:0.8 maltodextrin-to-fructose ratio.
This isotonic formula maximises carbohydrate oxidation (1.58g/min with 72% efficiency in trials), increases mean power output by 3%, and minimises gastrointestinal distress compared to traditional mixes. Ideal for sustained fuelling in long-duration efforts.
Ingredients (per 82g sachet)
Maltodextrin
Fructose
Vitamin B1 (Thiamine)
Vitamin B2 (Riboflavin)
Vitamin B6 (Pyridoxine)
No caffeine or fat
Informed Sport certified
No declared allergens listed; plant-derived
Nutritional Breakdown (per sachet mixed into 600ml water)
Calories: 320kcal (1,338kJ)
Total Carbohydrates: 80g
Sugars: 45g
Fat: 0g
Protein: 0g
Salt: 0.01g (10mg sodium)
Vitamins: B1, B2, B6
Suitable for Vegans/Vegetarians?
✅ Yes – Plant-based, dairy-free, gluten-free, vegan-friendly, and contains no artificial colours or sweeteners.
Allergen Information:
No major allergens declared
Manufactured to high purity under Informed Sport standards
Suitable for most dietary restrictions
If you’re gearing up for a long ride, race, or extended training session, this is your go-to drink.
This high-carb monster of a drink is packed with a whopping 80g of carbs per serving – just mix it with 600ml of water, shake, and you’re set.
The maltodextrin and fructose combo fuels you efficiently, and the isotonic formula means you can sip it throughout your session without worrying about stomach issues.
Who it’s for:
Endurance athletes – cyclists, ultra-runners, triathletes – who need high-volume carbohydrate fuelling during sessions longer than two hours. Perfect if you’re targeting 80-120g CHO/hour.
What it does:
Delivers 80g of fast-absorbing dual-source carbohydrate in one drink, with zero added distractions – no protein, fat, or caffeine. Engineered for clean absorption and consistent energy delivery.
How I’d use it:
Mix one sachet with 600ml water, shake well, and sip slowly during long workouts or races. Light on the gut, high on energy – ideal paired with gels or chews if you’re pushing past 90g carbs/hour.
The Science:
Effects of Maltodextrin–Fructose Co-Ingestion on Carbohydrate Oxidation
Study: In a controlled trial, cyclists ingested either maltodextrin alone or a maltodextrin+fructose mix (1.2g/min + 0.6g/min) during 150 min of cycling. Exogenous carbohydrate oxidation rates were then measured.
Wallis et al., Medicine & Science in Sports & Exercise (2005)
https://pubmed.ncbi.nlm.nih.gov/15741841/
Carbohydrate oxidation rates were 1.50 g/min with dual-carb ingestion – 40% higher than maltodextrin alone (1.06 g/min). This supports Beta Fuel 80’s 1:0.8 ratio for maximum fuel conversion and endurance sustainment.
Multiple Transportable Carbs Improve Performance and Reduce Fatigue
Study: Cyclists consumed either a glucose-only drink or a glucose-fructose solution (1.8 g/min) across 2–5-hour trials, followed by time trials. Results measured performance, fatigue, and RPE.
Jeukendrup et al., Sports Medicine (2014)
https://pubmed.ncbi.nlm.nih.gov/26373645/
Glucose-fructose mixtures yielded higher sustained power (+8–9%), lower perceived exertion, and better cadence maintenance versus glucose alone. Beta Fuel 80’s performance-crafted dual-carb system mirrors these proven benefits.
