A Malibu Barbie drink can sometimes contain sugar and caffeine as accidental additives. The good news is that a Malibu Barbie shot contains only about 1/4 teaspoon of each ingredient, so there's no reason to be concerned about any harmful effects. However, if you want a less intense experience, you can ask your bartender to use a syrup or cocktail mixer made from malt syrup, lowering the amount of sugar you consume by up to 85%.