With 24 grams (approximately 6 teaspoons) of sugar, a 12-ounce Slurpee packs quite the sweet wallop.Click to see full answer. Similarly one may ask, how much sugar is in a large Slurpee? Approximate amounts of sugar in frozen drinks: A large 7-Eleven Cola Slurpee contains 84g (21 teaspoons), a ‘super’ size contains 115g (29 teaspoons) and a ‘mega’ serving contains 152g (38 teaspoons) of sugar.One may also ask, how many calories is in a Slurpee? Nutrition Facts Calories 66 (276 kJ) Cholesterol 0 mg 0% Sodium 5 mg 0% Total Carbohydrate 18 g 6% Dietary Fiber 0 g 0% Subsequently, one may also ask, how much sugar is in a small Coke Slurpee? Nutrition Facts Calories 97 (407 kJ) Total Carbohydrate 27 g 9% Dietary Fiber 0 g 0% Sugars 27 g Sugar Alcohol 0 g How bad is a Slurpee for you?An average 11-ounce 7-Eleven Slurpee (the size they give away for free) packs 175 calories, 48 grams of carbohydrates, and a ton of harmful chemicals through food coloring and preservatives.