While this drink only uses the word as a name, a far more popular soft drink actually used coca leaves that essentially put cocaine in the drink as an ingredient (during their first 15 years or so of production), and was given a name that was based on the ingredients... and to this very day uses a nickname associated with cocaine. Maybe you have heard of the drink and company: Coca Cola... or better yet, its cocaine derived nickname: Coke. In the early 1900's they altered their ingredients to alleviate the cocaine in the syrup.
http://www.snopes.com/cokelore/cocaine.asp
http://en.wikipedia.org/wiki/Coca-Cola#Coca_-_Cocaine
ETA: ooops... someone already touched on Coca Cola. LoL sorry about that.
I'm always late for the good stuff.