Reign Total Body Fuel has more caffeine than Mtn Dew Kickstart (Orange Citrus): 300mg vs 92mg in the same 16 oz can. That is a 208mg 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 Total Body Fuel vs Mtn Dew Kickstart (Orange Citrus): the numbers
| Reign Total Body Fuel | Mtn Dew Kickstart (Orange Citrus) | |
|---|---|---|
| Caffeine per serving | 300mg per 16 oz can | 92mg per 16 oz can |
| Caffeine per fl oz | 18.8mg | 5.8mg |
| Servings to reach 400mg (FDA context) | 1.3 | 4.3 |
Sources: Reign Total Body Fuel's figure is verified in our Reign Total Body Fuel caffeine guide against Caffeine Informer (source); Mtn Dew Kickstart (Orange Citrus)'s figure is verified in our Mtn Dew Kickstart (Orange Citrus) guide against PepsiCo product facts (source).
The concentration gap is the striking part: Reign Total Body Fuel packs roughly 3 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Mtn Dew Kickstart (Orange Citrus) when you want the lighter dose or a slower ramp, and Reign Total Body Fuel 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 Total Body Fuel: the full caffeine guide
- Mtn Dew Kickstart (Orange Citrus): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
FAQ
Does Reign Total Body Fuel or Mtn Dew Kickstart (Orange Citrus) have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 92mg per 16 oz can for Mtn Dew Kickstart (Orange Citrus).
Which is stronger per ounce? Reign Total Body Fuel, at about 18.8mg per fluid ounce versus 5.8mg for Mtn Dew Kickstart (Orange Citrus).
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.