Simple inner shuttle that fits inside (regular cylindrical) Rx bottles and separates pills into sections. There's a rotating top piece to help with pouring out from one section at a time. If you have M2 screws lying around, you can use one (or filament would probably work) to hold the top piece in place - the screw should slide through, put some superglue in the hold of the main shuttle body to hold the screw in place. Not necessary though.

Modifying:
I've attached versions for the narrower pill bottles split into 3, 4, and 5 sections. You can use the fusion model to change the number of sections as well as the diameter and depth of the container using the variables. If the extrusions get messed up, in the timeline edit the second extrude feature - select everything in the inner circle and each of the walls. Everything else should be fine.