how much caffeine is in a rockstar
Silver/Black. 16. Rockstar products in the US have two levels of Caffeine content - either 10 mg of caffeine per ounce, or 15 mg of caffeine per ounce. Rockstar Energy Drink Original contains 160 mg of caffeine per 16 ounce can, while the Rockstar Punched energy drink contain 360 mg of caffeine per 24 ounce can.