Expired Creatine?

I just came across a couple of bottles of Biotest creatine. one expired Feb 09, the other expired Dec 08. Just curious if they are still ok to drink? Found them in a storage box that was leftover from a move last fall. Only the bottle from Dec 08 was open. the feb 09 is still sealed.


Wow, no replies. Any Biotest folks want to chime in?> (And yes I already used the search engine to see if this has been posted before, but came up with zero results.)

What would it turn into if it changes or deteriorates? If it’s optically active, it could turn into something worthless or even harmful. If it deteriorates, it’d turn into creatinine right? It seems that stuff is pretty harmless. I wouldn’t worry about it.