Zero that is not the drug. LOL. I used to drink a twelve pack in 2 days. I would alternate zero Coke and Dt. Mt Dew. I beat it by taking crystal light packs and making a frozen drink out of them with ice cubes. I know it sounds ridiculous but it worked. I used a ninja food processor and ground up the ice and powder to make a frozen drink I guess. I have also noticed my carb craving have dropped intensely since dropping soda. I am not going to say I never drink them but it is one a day at the most and its always with a meal.