If I could get specific, I think most people do know about the flu shots because the pharmacies advertise. And most people know, certainly in B.C., if you get a prescription they automatically sit down with you and go over it.
I think what is not so well known is that they can provide an emergency refill and renew and extend and change the formulation. Who activates that? Is it the patient who says she thinks she needs a change in dosage, or is that the pharmacist? Do they check with the doctor? How does it happen?