Question: how much caffeine in dunkin donuts iced coffee espresso?
Answer: Flavors of Dunkin' Donuts Bottled Iced Coffee Their store made iced coffee has a similar caffeine content at 198 mg per 16 fl oz serving. Along with the hefty dose of caffeine, Bottled Dunkin Iced Coffee has a lot of sugar. At 45 grams per bottle, it's like having the sugar amount in almost 2 Snickers Candy Bars.