Patients' Experience of Medication Brand Changes during Hormone Therapy for Breast Cancer-An Interpretative Phenomenological Analysis.

Medication adherence to hormone therapy (HT) in breast cancer survivors is often suboptimal and is affected by a range of factors. Patients are usually prescribed different generic formulations of HT drugs and their impact on side effects and on adherence and persistence is poorly understood. This study aimed to explore women's lived experience of HT medication brand changes (generic substitution) and its impact on side effects, quality of life and medication-taking behaviors, as well as on adherence and persistence.