It's true. Of course, it's not the National Aeronautics and Space Administration, but the Nasa, a tribe in Columbia, South America. They make a soft drink from coca leaves.
This has nothing to do with the space agency, so you can breathe easier now. However, I'll note that for years NASA (the space agency-- confused yet?) always had on their front page a note that said "Want to study black holes? Don't do drugs," with a link to an anti-drug ad. In my head, I always added the phrase, "... but if you want to understand black holes..."
Tip o' the pull tab to Boing Boing for the link.