PSA: What to do with Expired Medication

This year I will be thirty-five (face-palm) and for all of my adult life I have been lugging around, with every move I've made, all my expired medications. I didn't know what to do with them. I knew I shouldn't just throw it away. I had been told it shouldn't go to the landfill or be flushed and end up in our water supply - so I had that knowledge but I didn't know what to do with them.