Purpose. In recent years, decision-making between conventional medicine, complementary medicine (CM), and alternative medicine (AM) has been studied. The purpose of this study is to take a closer look at patients' thoughts regarding AM and CM and, if possible, to identify differences. Patients and Methods. Ten cancer patients were recruited to participate in a guided semistructured interview. Recruitment was via verbal request during counseling sessions for complementary healing methods. The main recruiting criterion was their interest in or use of AM or CM. In the following face-to-face interviews, demographic data, previous experience with alternative medicine and conventional medicine, doctor-patient communication, role of the family, and sources of information were determined. The interviews were conducted in a semistructured manner using a guide and were recorded anonymously. The recordings were subsequently transcribed. Results. The number of patients was 10, of which eight were female and seven could show higher educational status. In most of the cases, poor communication was mentioned, both in past situations and at the time of diagnosis. Patients described a lack of emotion in the communication of their diagnosis and paternalistic discussions. They complained that they did not receive an overview of the therapy and that they were hardly involved in the decision-making process. Especially, the demanding content as well as the scarcity of conversation time played an important role for the doctor-patient relationship and the resulting trust toward the doctor. A fundamentally dismissive attitude toward CM, AM, and CAM procedures led to a more fragile trust base. Most frequently used sources were the Internet, support organizations, and books. Conclusion. The first point of contact for cancer patients is usually the conventional physician. Commonly, he is one of the most important sources. If the patient is satisfied with the atmosphere of the conversation and the information regarding CAM received, he will probably follow the doctor's recommendations. Only in the case of dissatisfaction do patients seek advice from alternative medicine. Good training of conventional physicians in communication and complementary therapy options could, therefore, be of great importance.