Print out on of these calendars whenever your pet is taking a medication with a complicated dosing schedule (i.e., prednisone).  Jot down the dosing schedule for you pet on each day for the appropriate number of days.  Hang it on the refrigerator, and TA DAH!  You don't have to remember what day your pet is on for its medication.  Check off each dose when given on the day that it was given.  EASY!