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One time purchase
$3.99
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SiS Beta Fuel Drink Mix: The Standard-Bearer
Science in Sport didn’t just improve their game-changing drink mix – they perfected it. The Beta Fuel represents the gold standard in high-carb fueling, delivering 80 g of carbohydrates through a...
Reviews
4.7
142 ratings
5
4
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1
Favorite Carb Mix
This is by far my favorite drink mix for high carbs. Easy on the gut, not super sugary. Flavor is good, mild but still sweet. Loaded with carbs, and makes it easier to get that hourly target for the longer days.
B
Brett · April 21, 2026
Doesn’t dissolve
I’ve tried this product a few times and consistently struggle to get it to dissolve in water—particularly if you like your fluids cold. You’re not getting 80 grams per hour of carbohydrates if it sits as a lump in the bottom of your bottle. Other high-carb fueling options do not have as much of a problem.
J
John · May 19, 2026
Perfect
SiS Beta Fuel never disappoints. I know it will sustain my rides and it never clumps at the bottom of my bottle. It's my go to fuel for long endurance rides.
