Thanks @BibFortuna , that is somewhat reassuring!
About hearing loss I didn’t look at papers. It is mentioned in my general information leaflet and on https://en.wikipedia.org/wiki/Tadalafil. I am unsure how to judge this. Of course if millions of people take a drug some will report incidents that are not related. But (after finasteride) I also tend to think pharmaceutical information deliberately downplays risks.