Hi there ~ I understand your concerns. I strongly recommend that you undergo treatment for methamphetamine drug dependence. This is likely to improve you overall general health condition while you also deal with your graves disease. I also believe that a consultation with a psychiatrist would be necessary at this point so as for you to find the right medications and help with referrals to the appropriate specialists. I also believe that graves disease and meth addiction can have effects on the brain, which you can discuss in your psychiatric consultation with your doctor. I hope this helps. Take care and have a lovely day!