When it comes to your morning to-go or afternoon beverages, not all drinks are created equal. This article ranks popular energy drinks and sodas by the amount of caffeine they pack into a 12‑ounce (350ml) serving. According to the Mathematics Department at the University of Utah, the energy drink Red Bull contains about 80 mg of caffeine in an 8.2‑ounce can. That may not sound like much compared with coffee (a typical 8‑ounce drip coffee ranges from 115 mg to 175mg), but it’s nearly four times the amount in a 12‑ounce can of Coca‑Cola. Another early energy drink, Jolt Cola, packs 71.2 mg of caffeine per 12 ounces, still formidable even decades after its launch.