Reign Storm vs Sunkist Zero Sugar: which has more caffeine?

Reign Storm has more caffeine than Sunkist Zero Sugar: 200mg vs 19mg in the same 12 oz can. That is a 181mg gap, and since the cans match, the per-serving number is the whole story.

These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.

Reign Storm vs Sunkist Zero Sugar: the numbers

Sources: Reign Storm's figure is verified in our Reign Storm caffeine guide against Caffeine Informer (source); Sunkist Zero Sugar's figure is verified in our Sunkist Zero Sugar guide against Caffeine Informer (source).

The concentration gap is the striking part: Reign Storm packs roughly 11 times the caffeine per ounce. Sipping speed matters at that density; a 12 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.

Which one should you pick?

Pick Sunkist Zero Sugar when you want the lighter dose or a slower ramp, and Reign Storm when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.

Related reading

• Reign Storm: the full caffeine guide
• Sunkist Zero Sugar: the full caffeine guide
• The verified caffeine database

FAQ

Does Reign Storm or Sunkist Zero Sugar have more caffeine? Reign Storm: 200mg per 12 oz can versus 19mg per 12 oz can for Sunkist Zero Sugar.

Which is stronger per ounce? Reign Storm, at about 16.7mg per fluid ounce versus 1.6mg for Sunkist Zero Sugar.