IFNA1 and anemia: Reported adverse effects from DAA are rash, flu-like symptoms, fatigue, diarrhea, and anemia; however, these side effects tend to be milder and less frequent compared with IFN therapy.19 The DAA is also shown to be more effective with SVR achievement rate approaching 95%.20 The cost for DAA is about $150 to 200 per month compared with $300 to 400 for IFN in S. Korea.