I have one similar to 21sab, only it is 4 by 7, not 2 by 7. 4 by 7 gives you 28 slots, organized by week, like a calendar, right? I just fill it up with all my meds for the month, day by day. I only take pm meds.

It makes it easier to see when i need to call in for a refill. I put a little slip of paper with that meds name in the slot on the day it runs out, and a reminder on my calendar a week before to call it in.