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Assessment of Prior Opioid Tolerance Among New Users of Fentanyl Transdermal System in FDA’s Sentinel System

    Basic Details
    Medical Product
    fentanyl transdermal system

    Fentanyl transdermal system (FTS) is intended only for patients with prior opioid tolerance. The purpose of this study is to identify the proportion of new FTS users who had evidence of prior opioid tolerance, by dosage strength, in FDA's Sentinel System. 


    Noelle M. Cocoros, Marc R. Larochelle, Jennifer Popovic, Andrew B. Petrone, Cynthia Kornegay, Jing Ju, Judith A. Racoosin

    Corresponding Author

    Noelle M. Cocoros, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, 401 Park Drive, Suite 401 East, Boston, MA 02215, USA. Email: