Dunkin Shot in the Dark vs Starbucks canned Nitro (Black): which has more caffeine?

Starbucks canned Nitro (Black) carries more total caffeine per serving (155mg per 9.6 oz can vs 134mg per 8.1 oz can), but ounce for ounce Dunkin Shot in the Dark is actually the stronger drink at about 17mg per fluid ounce against 16. Which one "has more caffeine" depends on whether you measure the container or the concentration.

Dunkin Shot in the Dark vs Starbucks canned Nitro (Black): the numbers

Sources: Dunkin Shot in the Dark's figure is verified in our Dunkin Shot in the Dark 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 Dunkin Shot in the Dark when you want the lighter dose or a slower ramp, and Starbucks canned Nitro (Black) 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

• Dunkin Shot in the Dark: the full caffeine guide
• Starbucks canned Nitro (Black): the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index
• Compare any two of 120+ drinks

FAQ

Does Dunkin Shot in the Dark or Starbucks canned Nitro (Black) have more caffeine? Starbucks canned Nitro (Black): 155mg per 9.6 oz can versus 134mg per 8.1 oz can for Dunkin Shot in the Dark.

Which is stronger per ounce? Dunkin Shot in the Dark, at about 16.5mg per fluid ounce versus 16.1mg for Starbucks canned Nitro (Black).