Customer service was great. Product not so sure.
Customer service was great. Product I'm not so sure about yet. I ordered C4 and have taken twice. I don't notice or feel a difference a so far.
By Dana
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
807 reviews
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Cellucor is an award winning industry leader committed to premium products, innovation, and most importantly, your results. We strive to be the elite difference makers in the world of sports nutrition and dietary supplements. We consistently reinvent ourselves, updating our products to deliver the latest and greatest advances to help you reach and exceed your goals. We’ve changed the game with labels that clearly show all key ingredient dosages and set the stage for game changing results.
Cellucor (cellucor.com) has 807 customer reviews on The Fair Hearing, with an average rating of 4.7 out of 5.
807 approved reviews, newest moderated first
Customer service was great. Product I'm not so sure about yet. I ordered C4 and have taken twice. I don't notice or feel a difference a so far.
By Dana
I love this brand! I recently purchased protein powder from them, but found out I have a lactose intolerance and could not consume whey protein powder anymore. I contacted their support team and the guy was so understanding and awesome about it. He said I could return the protein powders even though I had already opened them, and I would get my money back. He even created a pre paid shipping label for me! Honestly I'm so satisfied with Cellucor and will continue purchasing their non dairy products of course :) BTW: C4 is amazing stuff and icy blue razz has to be my favorite flavor :)
By Hannah
You guys just simply have the best stuff in the supplement market, and plus the shirts you guys sell are top quality for a cheap price! It's awesome! Thank you guys for existing in the world!
By Jonathan
Cellucor products are my absolute favorite supplements! Received my package before the shipping due date, packaged well, and received free samples to try! I highly recommend using Cellucor's products!
By Kaitlyn
I will continue to purchase directly from cellucor.com as the customer service is stellar. Free shipping, free samples, and quick deliveries will keep me coming back!
By KC
Very pleased with the whey Cellucor protein!
By Brandon
Quick shipping, excellent product/value!
By Mike
Great company, products work great
By Amber