Don't forget about Big Brother.
Every prescription that gets filled in for you is recorded on a state and perhaps even a national data base .
So some pencil neck on the 22nd floor in a government building will be keeping tabs what you are taking to ensure that the doctors are not contraveining prescription regulations.
Note he does not care if you live or die and is only interested in prosecuting the doctor .
With a lot of blood pressure meds there is a limit on the time you are allowed to take them for.
I ran into that problems with the Steroids I was on for the RA
I wanted to keep on them till shearing was over just in case there was a relapse because holding down alpacas is quite a difficult job and they really don't like having a hair cut.
Should I loose grip then the 4 of us risked very serious injury
So I had to drop to 1/4 dosage for 3 months to make sure I had enough for full doses during the shearing month.
Also a lot of medications have a diminishing effect over time .
I don't know about the USA but down here the best answers I get about the effect of medications come from Vets .
Placental mammals all get the same medicine , just in different amounts but those who treat more than 1 species of animals seem to have a far better knowledge of what the drugs actually do & the risks of over prescribing or treating for too long than any GP I have ever talked to and judging upon what the pharmasist put on the label more than chemists as well .
My specialist was fantastic & loaned me a big folder of research papers to read on Hydroxychloroquine , Methotrexate & Prednisone because he realized I would make the effort to read & could understand ( almost ) what I read .