hay all i purchased my fist creatine product (NFS GREENRIDGE kre-alkalyn) its in a red bottle, i was on it for about a week then i really bad acne so i stoped taking it then started on it a few months later and the same deal. most ppl from my gym take creatine and say its good to take but im scared to try a new brand is this a common problem? would i be better off trying powder over tablets plz help