Hi,
I think many of the pharmaceutical companies will use Brexit as an excuse to put the prices up! and increase demand, by creating certain market conditions.
I have a source🕵️♀️! Who reliably informs me that the vast majority of medicines that are imported supposedly from Europe are actually made in places like India, then ‘repackaged' in some European country. So, we could import directly from India. Also a huge amount of stuff comes from America and Canada, oh and we make our own.
So I am not worried at all about the actualities, but very suspicious as to what might be conveniently blamed on Brexit.