Is Wendy's Frosty non-dairy? If you're vegan or lactose intolerant, you probably won't like this answer. Everyone else will probably appreciate the fact that they use real grade A milk and are proud to boast about that in their marketing. However there are no eggs in it.
Wendy's Chocolate Frosty ingredients: Milk, Sugar, Corn Syrup, Cream, Whey, Nonfat Milk, Cocoa (processed with alkali), Guar Gum, Mono and Diglycerides, Cellulose Gum, Carrageenan, Calcium Sulfate, Disodium Phosphate, Artificial Flavor, Vitamin A Palmitate.
Are Wendy's Frostys gluten free? Without knowing the exact sources for some of those ingredients, it can be hard to know for sure just by looking at that list. Though we can confirm it is indeed gluten free, because on Wendy's website they list it under their GF menu.
Are Wendy's Frosties bad for you? Even a medium classic chocolate comes in at 460 calories (110 being from fat), 76 grams of carbs, and a whopping 63 grams of sugar. It would be hard to say that's good for your health. The amount of antioxidants in it are quite low, too. An ORAC value of 160 means there is hardly any. Though in defense of Wendy's, this is not much better or worse than similar shakes and ice cream desserts of the same size. So it's bad, but not any more than what the next place sells.
Research Support, Non-U.S. Gov't: Carlsen MH, Halvorsen BL, Holte K, et al. Nutrition Journal NIH Jan 2010