Chains' Worst Summer Drinks Slideshow

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Dunkin' Donuts: Mountain Dew Coolatta

An electric green soda-flavored slushie? Yeah, it's probably not what your nutritionist is drinking. At 200 calories per 16-ounce serving (the size of a small cup), the drink doesn't have much to offer in the nutrition department — it contains zero percent of the daily recommended value of iron, calcium, and vitamins A and C.

Dunkin' Donuts