Reign Total Body Fuel has more caffeine than AMP Energy Original: 300mg vs 142mg in the same 16 oz can. That is a 158mg gap, and since the cans match, the per-serving number is the whole story.
AMP Energy Original vs Reign Total Body Fuel: the numbers
| AMP Energy Original | Reign Total Body Fuel | |
|---|---|---|
| Caffeine per serving | 142mg per 16 oz can | 300mg per 16 oz can |
| Caffeine per fl oz | 8.9mg | 18.8mg |
| Servings to reach 400mg (FDA context) | 2.8 | 1.3 |
Sources: AMP Energy Original's figure is verified in our AMP Energy Original caffeine guide against 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 AMP Energy Original 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
- AMP Energy Original: 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 AMP Energy Original or Reign Total Body Fuel have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 142mg per 16 oz can for AMP Energy Original.
Which is stronger per ounce? Reign Total Body Fuel, at about 18.8mg per fluid ounce versus 8.9mg for AMP Energy Original.
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