My husband has cirrhosis and I had him drink Aloe Vera juice after seeing a video about how it helped someone cure turmors in their liver. I just did a whole blog post about aloe and cirrhosis, on my blog. You can find it by googling "if you have cirrhosis please drink aloe." You can also go to Youtube and see the same video I saw by searching for "aloe vera amazing liver healing". I would highly recommend aloe vera juice to your Dad, it's amazing stuff! Good luck to him!