Abstract
Hepatitis C virus is a common cause of liver disease nationally and globally. Medication adherence to hepatitis C treatment is important for viral eradication and the prevention of chronic disease. The purpose of this article is to identify a nursing middle-range theory to guide research on the impact of nursing interventions on medication adherence during hepatitis C treatment and to apply the theory to practice by providing examples of the theory application. A gap in the literature is identified as the lack of research using theories or models as a guide to investigate nursing interventions and hepatitis C treatment. The lack of theory-based research may contribute to medication nonadherence. The self-regulation model provides the most complete guide for nursing interventions during hepatitis C treatment. Nursing interventions and hepatitis C research, guided by theory, generate knowledge specific for nursing.