> "The most frequently reported adverse reactions were mostly mild to moderate in severity and were manageable without the need for modification of doses or dis

> "The most frequently reported adverse reactions were mostly mild to moderate in severity and were manageable without the need for modification of doses or discontinuation of therapy." Having gone through two interferon treatments for HCV, one with the most current regimen of pegalated interferon and ribavirin, I can personally attest to this description being ridiculously inaccurate. The OP may exaggerate some, but the contrast with Harvoni is stark. Headaches, flu-like symptoms, anemia, lethargy, and chemical depression, not to mention high stress on the liver you're ultimately trying to cure, are just some of the lovely side effects of interferon-based treatment, which could last up to 72 weeks. Many people dropped out, many weren't cured. Success rates depended on viral genotype; certainly for some people it was well below 50%. And don't forget the two forms of birth control, since ribavirin basically guarantees birth defects (as if you'd be in the mood). Harvoni may be expensive, but it and the drugs related to it are unbelievably effective in doing something many thought impossible 10 years ago: curing HCV. I cleared the virus on the clincal trials with no side effects. Unfortunately, it wasn't soon enough to spare me from a liver transplant. Hopefully the new drugs will reach enough people in time to let them avoid severe liver disease. There aren't enough donor livers to cure, and liver failure is a uniquely crappy way to die.