We’ve had so many good suggestions for how to keep track of medicine dosages. Here’s Stacy’s, specific to pills that come in little foil packs:
I can never remember whether pills that need to be taken daily (antibiotics, etc) have actually been ingested, and I have to wrack my brain to try and remember. So when I receive the foil pack of pills I take out my trusted Sharpie marker and write the day of the week and date (ex: Mo 2/25) over each pill on the foil side. That way if I can’t recall giving or taking a pill, I can just whip out the pack and double check (the blister has been broken)! If a pill needs to be taken say, 3 times a day, then I just note "1, 2, 3" next to the date. It works perfectly for me, and saves all the worry I used to go through. Plus, it also means have records of when the medication was begun and ended (which could also be noted on the carton and filed away).
Related: Lots of great medicine-related hacks for all ages.