Unless you can call your doctor and get him to call in a prescription, you will have to go see him. If he has never treated you for asthma, he would require a visit before writing one for you.
Prescription only meds cost a lot more than over the counter, unless you have drug insurance.
I was assuming that one already has a relationship with the doctor. Sorry.
My asthma days are long-gone but my childhood/teen years were miserable because of it.It’s one tough illness.No inhalers in my day,but I had a glass nebulizer,a real pain in the neck.
The asthma just went away when I was 22.