Here in my country (at least public healthcare, which my mother and I use, and the private provider my grandfather uses), pharmacists give you enough full boxes to cover the month, even for controlled substances, even if that means giving a few extra pills.

As an example, I take 1 ½ Risperidone pills daily, which makes 45 pills a month. Boxes are 20 pills each, so they give me 3 boxes (60 pills). The leftovers helped me a couple of times I was sick or otherwise couldn’t get the refill on time.

There was only one time where they gave me two boxes and a blister (50 pills), but it was still a full blister.