End Stage Liver Disease with Hep-C

My father has been given the following medications and I believe that they are making him sicker and the doctor will not listen.  He has hypertension also. I will be switching his doctor soon but need to do some research on what medications other patients are on to control his liver disease so that new doc understands that I have done my homework.  Any help is greatly appreciated.  Here is the list of medications:

Nifedical
Nadolol
Allopurinol
Spironolactone
Furosemide

Please help he has dizziness, unsteadiness, loss of appetite,
feels cold, headaches.

Thank you all.