I found this on another website:
What are your thoughts? I plan not to take creatine on off days because I don't want to use my Animal Pump on those days. Or maybe I can use a cheaper creatine product on my off days (can anyone recommend cheap creatine in pill form? How about Kre-Alkalyn 1500 @ 1-2 caps per off day?).Seems like a simple question - but it is very hard to get a straight answer on this one. There is some evidence that indicates that creatine can help with muscle recovery. If this is true, then taking creatine on your off days is a good idea. Our feeling is that more research needs to be done before anyone can conclusively say that creatine helps with recovery. This research may not come anytime soon so you are left to make your own decision. If you feel that creatine is helping with muscle recovery, then yes take it on your off days. If you are not convinced that creatine helps with recovery, then you do not need to take it on off days.
Many people believe that you need to take creatine everyday to keep your creatine levels topped off. We do not see the research that proves this to be true. If you are taking creatine for the muscular boost in energy, that taking it just on workout days should be fine.
Want more facts to make this questions more confusing? A University of Kentucky study shows that use of creatine could help the brain recover from concussions and other injuries commonly suffered by professional and amateur athletes (the study was published in the Annals of Neurology - 11/2000). Brain damage was reduced 21% when creatine was given to mice three days before injury and 36% when given five days ahead of time. Rats given a diet with creatine for four weeks had 50% less brain damage than rats who did not receive creatine. This may explain why pro football players can recover so quickly from concussions - they take creatine.
So, if you play a contact sport you may want to take creatine everyday for the possible prevention of brain damage. Of course, more research needs to be done - but just another factor to consider when you decide if you should use creatine on your off days.
What do we do? Most of us take a half dose of creatine on off days and a full dose on days we work out.