My 78 year old husband just had a total knee replacement 1 week ago and is at a rehab facility for physical therapy. He had very serious side effects to Narco- high blood pressure , blurred vision bowel problemsfuzzy to tongue, no appetite, etc. they took him off this and put him onTramadol. His appetite is still poor and the doctor today said he had low sodium in his blood. I am concerned that he is benign given lots of different pills and they are affecting him in a negative way with little regard I keep trying to gent accurate information on the meds to no avail. His pt is going well but I am afreaid he is going to have a worse problem from all these drugs. What can I do. Thank you,