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Carbonnu Reviews 

3
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TrustScore 3.5 out of 5

3.6

Sports Nutrition Store
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Company details

  1. Sports Nutrition Store

Written by the company

We sell innovative nutrition supplements and goods that elevate the everyday lifter's gym lifestyle & experience

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3.6

Average

TrustScore 3.5 out of 5

3 reviews

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1-star

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Replied to 100% of negative reviews

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3.6

All reviews

(3)

3 reviews in the last 12 months

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Rated 4 out of 5 stars

Not Bad but Needs Work

It works pretty well. Taste isn't that great. Also I don't like the fact I have to put my mouth on the outside of the package. They need to change the design of the packaging. I also wear a CGM (continuous glucose monitor) being that I'm a pre-diabetic, and it seems to spike my blood sugar more so than my old pre-workout. I work out fasted so nothing else would contribute. Stevia, monk fruit, and sucralose shouldn't spike blood sugar so I'm not sure what it is. I would prefer you get rid of the sucralose however.

29 September 2026
Unprompted review
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Reply from Carbonnu

Glad to hear Carbon is working well for you! We hear you on the taste and the packaging, and really appreciate you sharing your thoughts on both. We’re always looking for ways to improve, and feedback like this helps us do that. Thanks for giving Carbon a try!

Rated 2 out of 5 stars

Underwhelming for me, hopefully better in the future

Ignoring the 5 month lead time to get the order, the flavor is awful. Probably the worst thing I've had sadly. The gel is an acquired taste and the energy boost lasts maybe 45 minutes for me.

17 September 2026
Unprompted review
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Reply from Carbonnu

Thanks for giving Carbon a try and for being honest about your experience. We hear you on the flavor and the energy not lasting as long as you’d hoped. We really appreciate the feedback, and we’ll keep it in mind as we continue working to improve Carbon.

Rated 5 out of 5 stars

Not bad

After waiting many, many, many...months for this I did not know what to expect but, it finally came. I have been using powdered pre-workout forever and wanted to try this kind of formulation. Well, the taste is atrocious but, it goes down quickly and hits pretty fast. Sustained, no jitters and no crash. Not bad... the app on the other hand needs alot of work and a tutorial

18 September 2026
Unprompted review
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Reply from Carbonnu

Really appreciate the review! Glad it was worth the wait and that the energy felt good without the jitters or crash. Totally hear you on the taste and the app though — those are things we can improve. Thanks for sticking with us and giving Carbon a shot!

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