My father is very sick,I have some ?'s

Hi,thank you so much for this site,it has given me new hope that my father can get better after the doctors have written him off.He has Chronic Lymphatic Leukiemia,Hep C,Aspergillosis(lung fungus),He had lung cancer and was operated on three years ago.He is out of the hospital and is now getting home health care.He has lost about 65 pounds and is very weak.I got him a juicer and will be starting him on that.He is also taking Black-Walnut Hull Tincture and olive oil extract.I'm going to start him on Uva Ursi soon.Is it OK to give him Dr. Clarks liver clense or is he too weak?Is it OK to zap him?Any other suggestions would be greatly appreciated.Thanks,Matt.