Yes - it's definitely good to have a reliable source of information about these things. Like having the days-of-the-week written on certain everyday medications. You can just go look and know whether or not you've taken today's dose. On the occasions where I've had to take medicine that doesn't have these (eg a course of antibiotics) I've had that "nagging sense" too -> not knowing means you could either skip a dose, or double-dose. So writing the days of the week on the plastic next to each pill helps with that. Having something that you can check easily and that you trust helps reduce the anxiety a lot.