What the nutrition panel actually says
We publish only what we have read. The fields marked not yet verified below are ones nobody on this site has confirmed off a physical package, so we have left them blank rather than guessing. Read the current panel yourself before you buy, and see our review methodology for how a review gets to fully verified.
- Serving size
- Not yet verified
- Total carbohydrate
- Not yet verified
- Total sugars
- 0g
- Added sugars
- Not yet verified
- Sugar alcohol
- 0g
- Dietary fiber
- Not yet verified
- Every sweetener used
- Sucralose, Acesulfame K
- Package reviewed
- Not recorded
- Label read on
- Not recorded
- Last verified
- Not recorded
- Source
- Not recorded
Formulas may have changed. Manufacturers reformulate without notice. Check the panel on the package in front of you against the numbers above, and email [email protected] if they disagree.
The short answer
C4 Energy Zero Sugar belongs in the drinks lane for one reason: the label says zero sugar and means it. The tradeoff is the stimulant load and the sweetener system, both stated plainly.
Label clarity, use case, and the tradeoff that can change the decision
We added C4 because shoppers keep asking for a genuinely zero-sugar energy drink, and this one is exactly that: 0g sugar, 0 calories, sweetened with sucralose and Ace-K. The Rebel caveat is the caffeine. 200mg per can is a serious dose, and the beta-alanine tingle surprises first-timers. This is a sometimes drink for people who already tolerate stimulants, not a daily hydration swap. As always, confirm the current Amazon price and pack size before ordering.
This is a desk review, not a laboratory test. We use current product and retailer information, separate observed label facts from editorial opinion, and send corrections to [email protected].
Best for
- People who want a zero-sugar energy drink with a real caffeine kick.
- Gym-goers comparing pre-workout style drinks without sugar.
Tradeoffs to read first
- 200mg caffeine per can: not for kids, and watch your total daily caffeine.
- Sweetened with sucralose and acesulfame potassium, two high-intensity sweeteners in the Watch lane.
- An energy drink is not a health drink; the performance blend does not make it nutritious.
What stands out
- Verified Amazon listing: C4 Energy Zero Sugar 16oz cans, 12-pack (ASIN B07BVJ858S).
- Label reads zero sugar and zero calories; sweeteners are sucralose and Ace-K, both in the Watch lane.
- 200mg caffeine per can plus CarnoSyn beta-alanine - a stimulant dose, not a casual soda.
- Always verify the current Amazon price, flavor, and pack size before ordering.
Ready to check the live listing?
Confirm the current product, seller, ingredients, package size, price, and availability before ordering.