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Pros & Cons
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Energy Boost
Customers have reported that EFX Sports Karbolyn Fuel provides them with sustained energy during their workouts without causing crashes or stomach discomfort. The fast-absorbing carbohydrates help fuel muscles and improve endurance, making it a popular choice for athletes and fitness enthusiasts. Some users also noted the refreshing taste of the Blue Raspberry flavor and the ease of mixing. However, a few customers mentioned that they were initially skeptical about the product's ability to provide both fast-absorbing and sustained energy but have since been impressed with their results.
Mixability
Customers generally have positive feedback regarding the mixability of EFX Sports Karbolyn Fuel, stating that it mixes well with water and leaves no chalky residue. Some customers also appreciate its value for money and use it as a meal replacement in conjunction with other supplements. However, a small number of customers mentioned no flavor which is what they prefer. Despite this, there seems to be an issue with the appearance of the powder when poured on the ground.

Highlights
Quality
Great taste, great carb load during workout.
Fuels the muscles and resulting in more sustained energy, especially on big muscle group days
They fill it to the brim…literally…and actually put the scoop at the top (see pic).
You may want to turn to something else after that since it’s hard to keep something like a liquid with you once you’ve started ... Read More
Price
Prime has it at a good price with fast delivery
You get your moneys worth, each serving is 50g of carbs.
Competitiveness
I tried oatmeal powder previously but it caused too much gastric distress while karbolyn causes zero for me.
For the record, karbolyn is not as powerful as a pre-workout, yet not as subtle as a daily vitamin/nutritional supplement.
Overview
- How are reviewers describing this item?
good, great, every and through. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has discovered that over 90% high quality reviews are present.
- This product had a total of 2,937 reviews as of our last analysis date on Mar 9 2025.
Helpful InsightsBETA
Posted by a reviewer on Amazon
I bought this and didn’t realize it was unflavored as i purchased a fruit punch flavor before
Posted by a reviewer on Amazon
I can train longer when i take it preworkout
Posted by a reviewer on Amazon
I think this is better then cluster dextrin i try that but didn’t have energy like with kabylon
Posted by a reviewer on Amazon
When i got the product it was full to the top
Posted by a reviewer on Amazon
Plus the scooper was on top too so it was easy to dig out
Posted by a reviewer on Amazon
You get your moneys worth each serving is 50g of carbs
Posted by a reviewer on Amazon
I tried oatmeal powder previously but it caused too much gastric distress while karbolyn causes zero for me
Posted by a reviewer on Amazon
I go with 50g whey75g karbolyn5g fiber
Review Count History
Price History
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