Reign Total Body Fuel vs Starbucks canned Nitro (Black): which has more caffeine?

Reign Total Body Fuel has more caffeine than Starbucks canned Nitro (Black) on both counts: 300mg per 16 oz can against 155mg per 9.6 oz can, and about 19mg per fluid ounce against 16. The serving sizes differ, so the table below shows both ways of counting.

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 Starbucks canned Nitro (Black): the numbers

Sources: Reign Total Body Fuel's figure is verified in our Reign Total Body Fuel caffeine guide against Caffeine Informer (source); Starbucks canned Nitro (Black)'s figure is verified in our Starbucks canned Nitro (Black) guide against PepsiCo product facts (source).

Which one should you pick?

Pick Starbucks canned Nitro (Black) 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
• Starbucks canned Nitro (Black): the full caffeine guide
• The verified caffeine database

FAQ

Does Reign Total Body Fuel or Starbucks canned Nitro (Black) have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 155mg per 9.6 oz can for Starbucks canned Nitro (Black).

Which is stronger per ounce? Reign Total Body Fuel, at about 18.8mg per fluid ounce versus 16.1mg for Starbucks canned Nitro (Black).