Barq's

Barq's /ˈbɑːrks/ is an American soft drink. Its brand of root beer is notable for having caffeine. Barq's, created by Edward Barq and bottled since the turn of the 20th century, is owned by the Barq family but bottled by the Coca-Cola Company. It was known as Barq's Famous Olde Tyme Root Beer until 2012.

Question: is there caffeine in root beer barq's
Answer: yes