C4 Energy Cereal Killer just landed at 12,000+ 7-Eleven and Speedway stores nationwide. What started as a limited Halloween drop proved so popular it earned permanent status and massive retail expansion.
C4 Energy's Cereal Killer just scored some major retail distribution. After launching last October as a "limited edition" Halloween flavor, this fruity cereal energy drink proved so popular that it's now available exclusively at over 12,000 7-Eleven and Speedway locations nationwide.
Originally marketed with a crime-scene campaign claiming it would "kill off" other flavors (it actually did eliminate Grape Frost and Arctic Snow Cone from the lineup), Cereal Killer delivered on the hype. PricePlow's own Mike even called it his all-time favorite energy drink flavor on Episode 200 of the PricePlow Podcast. When a flavor performs that well, it earns a permanent spot -- and a massive retail rollout.
If you missed the original launch or want the full breakdown on why this formula works, check out our complete C4 Energy Cereal Killer coverage. Below, we'll recap what makes this flavor special and where you can grab it.
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Cereal Killer: Fruity Nostalgia Meets Performance Fuel
C4 Energy's Cereal Killer brings fruity cereal flavor to the performance energy drink category -- 200mg caffeine, beta-alanine, zero sugar, and NSF Certified for Sport. Saturday morning nostalgia meets serious training fuel.
The flavor profile somehow captures that Saturday morning breakfast experience -- colorful cereal loops in cold milk -- without the sugar crash. C4 describes it as delivering "electric tartness fused with berry sweetness," and the bright yellow can splashed with cereal loops and milk splatters reinforces the nostalgic vibe.
The flavor is... uncanny. What shouldn't work (cereal-flavored energy drink) absolutely does. The fruity profile helps mask any earthy notes from the active ingredients while keeping each sip refreshing, and there's a cream sensation in there that works better than typical orange cream or vanilla cream flavors. It's wild. At zero sugar and just 10 calories per 16-ounce can, you're getting the taste without compromising your macros.
The formula mixes carbonated water with natural and artificial flavors, using sucralose and acesulfame potassium for sweetness. No artificial colors, no sugar, just clean energy in a flavor that actually tastes like what it claims to be.
The Formula Behind the Flavor
While we covered the complete formula breakdown in our main Cereal Killer article, here's what you're getting in each can:
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Caffeine (200mg)
Each can delivers 200 milligrams of caffeine -- the sweet spot for sustained energy and focus without pushing into pre-workout territory. Caffeine works primarily by blocking adenosine receptors in your brain, reducing fatigue signals while increasing dopamine and norepinephrine for improved alertness and focus.
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CarnoSyn Beta-Alanine
CarnoSyn beta-alanine is clinically studied to fight fatigue and enhance muscular endurance by increasing muscle carnosine levels. Carnosine helps buffer acid buildup during intense activity, delaying the onset of fatigue. You might feel the characteristic tingling sensation -- that's normal and indicates it's working.
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BetaPower Betaine Anhydrous
BetaPower betaine supports power output and cellular hydration. Research backs betaine for improving training performance and body composition when combined with resistance training, making it a staple in performance-focused beverages.
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NSF Certified for Sport
The NSF Certified for Sport seal means Cereal Killer meets rigorous third-party testing standards. Professional and collegiate athletes can trust it's free from banned substances -- critical when your career depends on staying compliant.
Flavors Available
Cereal Killer joins C4 Energy's established lineup. If you want to explore other options or need a backup if this one's sold out, here's the complete current roster:
Conclusion: Your New Favorite Just Got Easier to Find
Mike spoke, and 7-Eleven listened. Limited edition flavors that perform this well don't stay limited forever. Cereal Killer proved itself during the Halloween 2025 launch, earned permanent status, and now lands at over 12,000 7-Eleven and Speedway stores nationwide.
The formula hasn't changed: still 200mg caffeine, CarnoSyn beta-alanine, BetaPower betaine, zero sugar, and NSF Certified for Sport. The only difference is accessibility. If you missed the original drop or want to stock up, you can now grab it during your regular convenience store run.
Note: You might also find Cereal Killer on Amazon through our widgets below, but if it's not showing in early 2026, your best bet is hitting up your local 7-Eleven or Speedway. These stores committed to keeping this flavor in rotation, so you'll always have a reliable source.
Sign up for C4 Energy alerts below to catch the next flavor launch or retail expansion.
Cellucor C4 Energy Drink (Carbonated) – Deals and Price Drop Alerts
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Disclosure: PricePlow relies on pricing from stores with which we have a business relationship. We work hard to keep pricing current, but you may find a better offer.
Posts are sponsored in part by the retailers and/or brands listed on this page.
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