My GP who first prescribed it changed my prescription until he found one ( a licensed brand) that produced no side effects. . (enalapril, brand Innovace). Years later when we moved house/GP and pharmacy, the new pharmacist told me " "I have to order this in specially for you, nobody else gets it because its so expensive most GP's won't prescribe it".
20 plus years later we moved house.GP/ Pharmacist again.
At the new GP, their in-house pharmacist rang me to question, why named brand ? Because no side effects. "Could we try another? ". No thanks.
And the very first time I went to our new local chemist to collect my prescription, the chemist had obviously put a flag on it and comes out to ask " Are you going to be a regular customer? Just asking because no other customers get this ACE brand, we have to order it in specially. "
5 years later,they are still "specially ordering it in" just for me.