Wow, I just read the label, and it turns out you're only supposed to take one cough drop every two hours. Apparently I've been doing it wrong all these years and you're not supposed to continuously pop them one after another until the bag is empty.
This is the sort of thing that makes you paranoid. Like, I wonder what else I've been doing wrong the whole time. Should I be sleeping six hours a night? Am I supposed to use the other brake on my bike? Is the toilet paper roll supposed to face the other way? Is it actually pronounced "To-mah-to"?