creatine alone will not give you too many harmful effects... creatine is good for all gym goer... if you wish to get more muscle, then only you get some protein after your workout. creatine is use during your workout... you must get a natural source and man made protein to get ultimate result...

need not to be so wrathful my dear... i never say it is a must...
just a little discussion and you may say, "IMHO" before start your debates.
perhaps, my conversation is too short and makes you confused ...
use your creatine during your, and your may drink after the workout for recovery.
usually people will consume protein after the workout.