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Quantity
1
Description
Science in Sport (SiS) has long been known for their isotonic gels, but they are now stepping up the carb game even more with a high carbohydrate fueling line. Beta Fuel.
Beta Fuel is their "high-carb performance" line that offers amazing...
Reviews
4.8
10 ratings
5
4
3
2
1
Still need an electrolyte source
I haven’t had a chance to try the chews yet, but I’m a big fan of the beta fuel gels and the drink mix was decent but on the sweeter side. The nootropics gel has a bit of a bitter aftertaste, but was able to get it down.
C
Caroline · April 18, 2026
Sis
My to go carbs
D
Daniel · March 21, 2026
Best Fuel for my Stomach
I've been using these solely for my long runs - 4+ hours and I have absolutely ZERO stomach issues for the entire run!