To be exact, there are a hundred and fifty milligrams of caffeine in the sixteen ounce serving size, which comes in color-changing cans. There are ninety-six grams of caffeine in the ten ounce serving size, which comes in bumped-glass bottles, a design that won Bawls the 2005 Glass Packaging Institute's Clear Choice Award for Best Packaging of a Carbonated Beverage. To help avoid you getting the shakes from all the caffeine, this drink is sugar free.