Large dry stools straining

[Scottishguy66]

hi guys 58 yo male on Cosentyx for psaoritic arthritis . Last few months been straining when I poo and the poo can be very large and wide which obviously causes pain , I go quite regular as in once per day so not rushing and feel nice and Empty afterwards so wondering how I can reduce the straining more than anything? I have read Cosentyx can cause IBS and other stomach issues ? Any one else had similar experience ?

Cheers