Creatine: Supplement or Drug?

Question:

I was recently watching an interview with the great Gary Player, who was talking about the use of performance enhancing drugs in golf. He went on to list several drugs that he suspected were being used, and included in this was creatine. I have always been under the impression that creatine was ok. I have also discovered that creatine has been banned at the Arsenal football club, on the U.S gymnastics team and in France. I live and work in the UK and have seen for myself the use of creatine endorsed by various pro football and rugby clubs. I'm confused. What is creatine classed as, a supplement or drug? Why do the U.S and France seem to have a different opinion to the UK? Is it about to be banned on a large scale, and what is the latest research suggesting? If you can answer any of these points, I would greatly appreciate it.

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