I’ve also heard some say that you can’t split a box, so they will give you the box, but make you wait longer than 30 days to get a refill. So I don’t know if it depends on the medication on when they can split or not. I have mostly been getting only vials, which they obviously don’t split.
But the bottom line, regardless of how they do it - either split the box or make you wait longer than 30 days, if you get a script for a bit more, you can get around it.
You should always have a cushion built into any script like that. If you are using 10 units a day, you need a script for more than that. What happens if you are at the end of the insulin and there is a snowstorm or something. Every script needs a cushion built into it.
Here is some discussion on it: