Reign Total Body Fuel has more caffeine than Hint Kick caffeinated water: 300mg vs 60mg in the same 16 oz can. That is a 240mg gap, and since the cans match, the per-serving number is the whole story.
Hint Kick caffeinated water vs Reign Total Body Fuel: the numbers
| Hint Kick caffeinated water | Reign Total Body Fuel | |
|---|---|---|
| Caffeine per serving | 60mg per 16 oz bottle | 300mg per 16 oz can |
| Caffeine per fl oz | 3.8mg | 18.8mg |
| Servings to reach 400mg (FDA context) | 6.7 | 1.3 |
Sources: Hint Kick caffeinated water's figure is verified in our Hint Kick caffeinated water 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).
The concentration gap is the striking part: Reign Total Body Fuel packs roughly 5 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 Hint Kick caffeinated water 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
- Hint Kick caffeinated water: 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
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Gear from this guide
FAQ
Does Hint Kick caffeinated water or Reign Total Body Fuel have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 60mg per 16 oz bottle for Hint Kick caffeinated water.
Which is stronger per ounce? Reign Total Body Fuel, at about 18.8mg per fluid ounce versus 3.8mg for Hint Kick caffeinated water.
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