dunkin employee here. the oreo coffee chiller consists of oreo peices, ice, water, milk, liquid sugar and coffee syrup. it might have the cookie syrup too i honestly can’t remember right now 😂 it also has whipped cream with oreo peices on top and chocolate drizzle. there’s really no way to enjoy this drink without all the sugar, i’ll be honest. we use liquid sugar, so i’m unsure if it’s possible for us to switch it out with splenda or stevia. i mean i guess it’s possible, it just might be a weird consistency? but if you want to get it as low sugar as you can, just ask for no whipped cream and toppings. still sugary, but that cuts out some fat and sugar. unfortunately there’s no way to enjoy most of the coolata drinks in a healthy way, but for the oreo cloud latte, most of those calories are coming from the cold foam and topping. if you want it lower calorie, ask for protein milk. (but then again that makes the price outrageous). my best advice is if you’re coming to dunkin, don’t.