Could any of the following drugs cause a mental confusion i.e. When are we going home? This family member had a kidney removed-cancer- 7 weeks ago, is home with a cathater, has had infection & returned to hospital 3 times since surgery. Following are newly prescribed drugs:ceftin ,oxybutynin, flomax,finasteride, I have tried to advise him to call his Dr ,but he has an appt in 3 days & wife does not think it s necessary, Advise, please!