Private
It isn't all like the Middle Ages. That would be tiresome. I mean to say that it isn't like any one time in particular. Preya is a magical realm.
Nobody cares if I drink beer in Everdale. When I visited Brightford they made a terrible fuss and tried to say that even a grown man of twenty couldn't drink beer. I had to use illusory charms to look older and that was a bother.
I'm afraid I don't know anything about drug laws. I don't take muggle medicines.