“The concoction inside mixes Faygo Redpop, a strawberry-flavored cream soda, and promethazine codeine cough syrup, a prescription pain reliever and cough suppressant that’s also the main ingredient for any number of similar cocktails referred to as drank, purple stuff, lean, and sizzurp, among other names.” Bloomberg on Hip-Hop’s Unlikeliest Icons: Promethazine Codeine Syrup Manufacturers.