Description from Science In Sport

WORLD-LEADING ENERGY GEL OPTIMISED WITH A NEW CARBOHYDRATE RATIO
Beta Fuel Dual Source Energy Gel is optimized with a brand new 1:0.8 ratio of 40g carbohydrate to enhance your power output, increase your body's carbohydrate usage efficiency, and limit gastrointestinal discomfort to deliver a scientifically superior fuel.

WHY YOU SHOULD USE BETA FUEL DUAL SOURCE ENERGY GEL
As an endurance athlete (your events typically last more than two hours) you need to take in between 80-120g of carbohydrate per hour. The Science in Sport Beta Fuel Dual Source Energy Gel delivers an optimised 40g of carbohydrate in a single, convenient fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance.

NEW 1:0.8 RATIO REPLACES 2:1 RATIO
A 1:0.8 ratio of maltodextrin to fructose increases the percentage of ingested carbohydrate that is oxidized (known as efficiency) from 62% to 74% when compared with a ratio of 2:1
A 1:0.8 ratio of maltodextrin to fructose reduces self-reported symptoms of stomach fullness when compared with a ratio of 2:1

THE SCIENCE BEHIND BETA FUEL HAS EVOLVED
Through our Performance Solutions team, we have worked closely with elite athletes in the research and development of the new Beta Fuel range to bring you a scientifically superior fuel in a range of formats that allow you to use +17% more carbohydrate (O’Brien et al, 2013).

A ratio of 1:0.8 enhances exogenous CHO oxidation compared with 2:1 ratio by 17% (O’Brien et al) and 10% (O’Brien et al)
A ratio of 1:0.8 enhances mean power output during 10 maximal sprint efforts by 3% compared with 2:1 ratio (O’Brien et al)
A ratio of 1:0.8 increases % of ingested CHO that was oxidised (efficiency) from 62% (2:1) to 74% (1:0.8) (O’Brien et al)
A ratio of 1:0.8 reduces symptoms of stomach fullness and nausea when compared with a ratio of 2:1 (O’Brien et al)