Starbucks Doubleshot Espresso & Cream has more caffeine than International Delight iced coffee on both counts: 120mg per 6.5 oz can against 88mg per 12 oz serving, and about 18mg per fluid ounce against 7. The serving sizes differ, so the table below shows both ways of counting.
International Delight iced coffee vs Starbucks Doubleshot Espresso & Cream: the numbers
| International Delight iced coffee | Starbucks Doubleshot Espresso & Cream | |
|---|---|---|
| Caffeine per serving | 88mg per 12 oz serving | 120mg per 6.5 oz can |
| Caffeine per fl oz | 7.3mg | 18.5mg |
| Servings to reach 400mg (FDA context) | 4.5 | 3.3 |
Sources: International Delight iced coffee's figure is verified in our International Delight iced coffee caffeine guide against Caffeine Informer (source); Starbucks Doubleshot Espresso & Cream's figure is verified in our Starbucks Doubleshot Espresso & Cream guide against Caffeine Informer / Starbucks nutrition (source).
Which one should you pick?
Pick International Delight iced coffee when you want the lighter dose or a slower ramp, and Starbucks Doubleshot Espresso & Cream 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
- International Delight iced coffee: the full caffeine guide
- Starbucks Doubleshot Espresso & Cream: the full caffeine guide
- The verified caffeine database
FAQ
Does International Delight iced coffee or Starbucks Doubleshot Espresso & Cream have more caffeine? Starbucks Doubleshot Espresso & Cream: 120mg per 6.5 oz can versus 88mg per 12 oz serving for International Delight iced coffee.
Which is stronger per ounce? Starbucks Doubleshot Espresso & Cream, at about 18.5mg per fluid ounce versus 7.3mg for International Delight iced coffee.
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.