Complementary and alternative medicine use and recommendations for discontinuation of supplements in an integrative oncology clinic

12058 Background: It is well established that many patients with cancer are taking dietary supplements (DS) and alternative medicines and often do not disclose such to their care teams. There is potential for harm in several ways: 1) interactions with their medications that may increase side effects, 2) interactions with their treatment that may lead to decreased efficacy, 3) direct toxicity from the supplement 4) financial toxicity. We have recently started a new Integrative Oncology service to help counsel patients about improving lifestyle factors and assist patients with safe and evidence-based integrative treatments and supplements. Methods: Patient data (N=100) were collected prospectively from an Integrative Oncology Clinic. The number and type of DS were documented. Using the Natural Medicines Database (NMD), we determined whether supplements interacted with the patients’ other medications or cancer therapies. We calculated the percentage of patients in which a recommendation for discontinuation of DS was recommended, along with the supporting reasons. We calculated the most common DS being taken and other alternative therapies beyond supplements. Results: Ninety-one percent of patients took DS, with an average of 5.5 per patient (range 0-20). The most common DS patients reported taking (%): Vit D (52), Vit C (41), Multivitamin (34), probiotic (27), B Vitamins (26), Ca (20), zinc (20), fish oil (18), cannabis (18), mushrooms (18), turmeric (17), magnesium (15), melatonin (14), biotin (11), coq10 (7), iron (8), VIT E (5), and glucosamine (5). Eighty-nine percent of patients using DS were on active cancer therapy. In thirty-five percent of patients, we recommended stopping some of their DS or other therapies. Number of patients using alternative therapies beyond DS: IV Vitamin C (5), Rick Simpson oil (high dose THC) (4), extreme diets (4), mistletoe (2), re-purposed meds (2); and one each was using hyperbaric O2, ozone, homeopathic, ayurvedic, insulin-potentiated chemo, miracle mineral cure, chelation, low dose naltrexone Conclusions: Cancer patients both on and off active treatment are using large numbers of DS with potential for adverse effects and/or decreasing efficacy of treatments. This study highlights the prevalence of DS and alternative medicine usage in cancer patients referred to an integrative oncology clinic and demonstrates the need for counseling about safe supplement use; in 35% of patients, discontinuation of DS was recommended. [Table: see text]