Postoperative fatigue (POF) is one of the main complaints in approximately 39-80% of CABG surgery patients. POF can have a significant impact on an individual's quality of life (QoL) and recovery. The objectives are to examine how an oral iron (Feramax®) influences fatigue during early postoperative recovery (at three months) among CABG patients and determine the effects on recovery outcomes (e.g. QoL, functional capacity, anemia, and medication adherence). To achieve these objectives the research will aim to answer the following questions: