Introduction: Coronary heart disease (CHD) is the leading cause of death in Malaysia. This study aims to explore the treatment experiences of patients with recurrent coronary heart disease during hospital admission and after discharge. This research also attempts to understand patients’ adherence to the prescribed treatment. Method: The main sample for this study includes inpatients and outpatients with recurrent CHD who have undergone second- ary prevention treatment at certain tertiary hospitals which were purposively sampled. The transcripts of one-to-one semi-structured interviews (N=22) were analyzed using the Interpretative Phenomenological Analysis (IPA). Results: Three themes emerged in the analysis of treatment adherence among multi-ethnic patients with CHD: (i) doctor-pa- tient relationships; (ii) information-seeking behaviour; and (iii) psychosocial beliefs. Other factors that influence treat- ment adherence include patients’ cultural, religious, or spiritual beliefs-based complementary alternative medicines (CAM), if these factors were inadequately addressed by their respective heath professional. Conclusion: The results demonstrate that for future cardiac rehabilitation program development, health professionals must not only focus on the patient’s care improvement but must also be knowledgeable on the patient’s preferred alternative treatment.