Does Bubble Tea Have Caffeine? What You Need to Know Does bubble tea have caffeine? Yes, many bubble tea drinks contain caffeine, but not every bubble tea is caffeinated. The caffeine usually comes from the tea used as the drink's base—not from the tapioca pearls, also called boba. Black tea, green tea, oolong tea, and matcha naturally contain caffeine. If a bubble tea is prepared with one of these ingredients, the finished drink will generally contain caffeine. On the other