help needed regarding father

my father (68M, 178cm & ~82kg) has been taking medication for years. i’m gonna list what he takes, but please be aware that we live in croatia and you might not be familiar with them.

dulsevia (active ingredient duloxetine) 90mg - 1x in the morning
nolpaza (active ingredient pantoprazole) 20mg - 2x (1 morning and 1 evening)
siofor (active ingredient metformin) 500mg - 2x (1 morning 1 evening)
dulsevia (active ingredient duloxetine) 30mg - 1x at noon
coupet (active ingredient rosuvastatin) 20mg - 1x in the evening

9 days ago, he fell and hurt his ribs and back and began taking painkillers (doreta, active ingredients tramadol and paracetamol) and since then i’ve noticed a decline in his wellbeing. he has been more confused, his behavior is alike to a person who has just woken up, he has some mild hallucinations (auditory and visual — both very mild), he seems more forgetful and overall his behavior is most alike to what i have researched to be delirium. now, he has has similar episodes before, once in august 2024 and once in january of this year. both lasted around a week. he has always been a little forgetful and had a lack of concentration during conversations and such, but this seems too much, even considering his age. my question is, could it be his medication that’s affecting his state, or is it something more?