Things I learned today that shocked me: Celsius is essentially banned from the NCAA. Some details on the weird situation The NCAA has always had strict regulations around high amounts of Navigating the NCAA's Banned Substances Playbook Sports Performance 2aDays Hi I'm a sports dietitian. Celsius isn't banned but high caffeine levels are addressed in my post NCAA regulations limit the consumption of caffeine before competitions. According to their rules, an 71654 NCAA Drug Testing Program Third Party Testing Nutritional Supplement Knowledge, Attitudes, and Use Among an NCAA I Collegiate Student Athlete Population