C4 Energy
C4 Energy is a performance energy drink brand that delivers explosive energy and enhanced endurance with 200mg of caffeine and clinically studied ingredients, designed for athletes and active individuals.
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C4 Energy · Jun 16
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C4 Energy · Jun 14
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C4 Energy · Jun 10
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C4 Energy · Jun 08
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C4 Energy · Jun 02
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C4 Energy · May 30
C4 Energy customer service
Use any of the convenient means below to contact C4 Energy customer service.
| Phone | 800-870-2070 |
| Web | https://cellucor.com/pages/customer-service |
Headquarters
332 Grace Lane
Austin, Texas 78746
800-870-2070
Returns
What is the return window?
C4 Energy offers a 60-day, full money-back guarantee when you purchase from C4Energy.com, Cellucor.com, or authorized sellers. Your guarantee request must be received by the Care Team within 60 days after purchase.
Do I need a receipt to return an item?
Yes, you need proof of purchase information available regarding what product you purchased, and when and where you purchased your product. If your satisfaction guarantee request is approved, you will need to submit proof of purchase.
How will I receive my refund?
If for any reason you are not satisfied with a C4 or Cellucor product, you may request a refund or replacement product. Upon receiving the return, a Care Team representative will contact you regarding the product exchange, credit, or refund.
What if I received a damaged or incorrect item?
If you are unable to reach a satisfactory resolution with the authorized seller from whom you purchased the product, please contact Nutrabolt at the email address or phone number above and we may be able to facilitate an exchange.
How do I start a return online?
Please contact the Care Team via email or web widget on the bottom left of each product page to initiate the return and gather where the return should be sent to.
Editor's Take
C4 Energy isn't just another energy drink trying to muscle its way into your fridge-it's basically the overachiever of the performance beverage world. Think of it as that friend who somehow manages to crush their workout, nail their presentation, and still have energy left for happy hour.
What sets C4 apart is its no-nonsense approach to energy. Built for the outperformers and overachievers working tirelessly to unleash their potential, this isn't your typical sugar-loaded energy drink. We're talking zero calories, zero sugar, and 200mg of caffeine that hits different than your morning coffee. And here's the kicker-it carries the NSF Certified for Sport® label, which means professional and collegiate athletes can actually drink this stuff without worrying about banned substances.
The brand comes from Nutrabolt, a company that's been in the sports nutrition game for over 20 years and clearly knows what they're doing. With over 3 billion servings sold worldwide, they've got some serious street cred. But what really caught my attention is how they've managed to create something that works for everyone-from weekend warriors hitting the gym to esports players grinding through late-night sessions.
The ingredient list reads like a performance lab's dream team. CarnoSyn® Beta-Alanine for explosive energy and enhanced endurance, plus BetaPower®, naturally-derived betaine from beets, to help maintain muscle cell hydration. It's not just caffeine doing all the heavy lifting here.
And let's talk flavors-because nobody wants to choke down something that tastes like liquid chalk. They've partnered with Mars Incorporated to bring flavors based on Starburst and Skittles, and honestly, that's just genius marketing meeting actual taste innovation.
The brand's been making moves too. In April 2024, C4 became the first official energy drink partner of WWE, and they're the official energy drink of SXSW. That's not just sponsorship money talking-that's a brand that understands its audience and shows up where the action is.