Reign Total Body Fuel has more caffeine than Aspire Energy on both counts: 300mg per 16 oz can against 80mg per 12 oz can, and about 19mg per fluid ounce against 7. The serving sizes differ, so the table below shows both ways of counting.
Aspire Energy vs Reign Total Body Fuel: the numbers
| Aspire Energy | Reign Total Body Fuel | |
|---|---|---|
| Caffeine per serving | 80mg per 12 oz can | 300mg per 16 oz can |
| Caffeine per fl oz | 6.7mg | 18.8mg |
| Servings to reach 400mg (FDA context) | 5.0 | 1.3 |
Sources: Aspire Energy's figure is verified in our Aspire Energy caffeine guide against Aspire / Caffeine Informer (source); Reign Total Body Fuel's figure is verified in our Reign Total Body Fuel guide against Caffeine Informer (source).
Which one should you pick?
Pick Aspire Energy 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
- Aspire Energy: the full caffeine guide
- Reign Total Body Fuel: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Aspire Energy or Reign Total Body Fuel have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 80mg per 12 oz can for Aspire Energy.
Which is stronger per ounce? Reign Total Body Fuel, at about 18.8mg per fluid ounce versus 6.7mg for Aspire Energy.
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