Asthma inhalers (at least, some types) are available over the counter here.
As far as I know, only "narcotics" (opiates, psychostimulants...) require regular check-ins (due to byzantine legislation) - but even that's been worked around with one-click refill requests and telehealth.
The types available over the counter are unsafe for long term use and frankly worse in every way compared to the one you need a doctors permission to purchase.
You need a established relationship to access one click refill and telehealth, they will tell you to come in after a time.
In Europe you can just buy those sort of things outright in many cases. Things like inhalers can just be had without getting a doctor on board.
I believe it's a uniquely US thing where the doctor needs to collect a well visit fee on you treating yourself for a common or chronic illness.
"You still have asthma? OK, here is permission from my caste to breathe, pay the fee on your way out." Is bonkers when you think about it.