UnforgetableBoard / Medicine board

“Did I take medicines this morning?”
This is a big confusion of seniors who have to take medicines but tend to forget
Is there an original solution for the problem of the forgetfulness?
To Color-code the capsules or pills will change the current assembly mode.
So something can be done with the medicine board.
There are many medicines that are taken 3 times a day in the whole world.
Three colors should be used to mark them.
A great idea occurred.
A lot of National flags contain three colors!
So it can be the National flag that reminds people to take medicines 3 times a day.