Do not use Duragesic Patch (fentanyl) if you are allergic to this or similar medicines or to any ingredient present in Duragesic Patch (fentanyl).

Before using Duragesic Patch (fentanyl), tell your health care provider about any of the following: if you are pregnant, planning to become pregnant, or breastfeeding if you are taking any prescription or nonprescription medicine if you are taking any herbal products, if you are taking blood thinners if you have stomach problems if you have peptic ulcers if you have any other medical condition like liver or kidney function impairment, heart ot lung problem,

Other:

How much medicine you take and how often you take it depend on many factors, including the condition being treated and the age and weight of the patient. If you have any questions about the amount and/or frequency of Duragesic Patch (fentanyl) you are taking, talk with your health care provider. Do not stop taking Duragesic Patch (fentanyl) without checking with your health care provider. Patients with previous medical conditions should talk with their health care provider before taking Duragesic Patch (fentanyl). Do not take more medicine than prescribed unless advised to do so by your health care provider. Do not take any other over-the-counter or prescription medications without talking with your health care provider. If a dose is missed, take it as soon as possible. If several hours have passed or if it is nearing time for the next dose, do not double the dose to catch up, unless advised by your health care provider. If more than one dose is missed, contact your health care provider or pharmacist.

Store Duragesic Patch (fentanyl) in a dry place at room temperature between 59° - 86°F. Keep out of reach of children and pets