In recent years, there has been an increased interest in complementary and alternative medicine (CAM) use among people with cancer. Many are looking for informed advice and desire communication with their physicians about CAM use. Communication is crucial in establishing trust with patients, gathering information, addressing patient emotions, and assisting patients in decisions about care. The quality of communication in cancer care has been shown to affect patient satisfaction, decision making, patient distress and well-being, compliance, and even malpractice litigation. Communication is now recognized as a core clinical skill in medicine, including cancer care, and is important to the delivery of high-quality care. A communication approach that fosters a collaborative relationship that includes adequate information exchange, responds to emotional needs, and manages uncertainty can lead to informed decisions about CAM use. This type of communication can help facilitate an open discussion with cancer patients and their families about integrating CAM use into their care and help physicians fulfill their roles in caring, comforting, and healing, even when cure is not possible. In this article, the authors discuss a possible model of effective patient-physician communication about CAM use in cancer care based on a comprehensive overview of the literature.