I dont know your full situation...only what you wrote above but from all the medical advances there is no reason you should have to die from liver disease. Even if you are at end stage liver disease...a transplant is possible. I HAD Hep C and treated it. I treated it with the old medication thats very hard on people but THERE IS NEW FDA APPROVED DRUGS that are curing people with little to no side effects and for a shorter duration. Its a combination therapy called Sovaldi (sofosbuvir) and Olysio (simeprevir). These drugs have even been found effective for people in the later stages of cirrhosis.
There has been so much in medical breakthroughs with Hep C there's no reason anybody should die from it. For many years doctors thought that Hep C was just a disease the damaged your liver but have now found out that it can cause diabetes, neuropothy, arthritis, and much more. Many medical issues are secondary to the Hep and can resolve once the Hep is eradicated. Check out the Faq sheet below.
http://www.hcvadvocate.org/hepatitis/factsheets_pdf/Extrahepatic.pdf
I understand your feeling defeated right now but Id like to invite you to check out out Hep C forum. Its great over there. You are not alone. There are people over there curing there Hep C every day. People over there with liver cancer getting the new up to date treatments and beating this horrible disease. There are MANY others with diabetes as well in the same situation as you. A lot of people get better after they treat the Hep.
http://www.medhelp.org/forums/Hepatitis-C/show/75
In terms of the methadone...others commented on that and have given you great advice. There are others on hospice care in the Hep forum too that may give you some additional feedback.
God Bless you
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To Everyone:
I just wanted to say to anybody who reads this that if you have Hep C and your doc is telling you that your liver is fine and you dont need treatment PLEASE go get a second opinion preferably from a Heptalogist...someone who treats liver disease. One that is associated with a University Hospital and who is up to date with all the new literature and studies.
You can go from a stage 1 to 4 in no time. And PLEASE dont base your livers status on your enzymes. If your doc is telling you that your enzymes are normal so your liver is fine...RUN! You need a liver biopsy, FibroSure, or FibroScan test to gauge that. You can have normal liver enzymes with a jacked up liver.