It's important to note that certain problems can develop in people taking this medication. For example, fentanyl can cause life-threatening breathing problems (called "respiratory depression"). People who have respiratory depression may take slow and shallow breaths or deep breaths separated by long pauses. Certain people may have an increased risk for respiratory depression with fentanyl, including:
People who already have breathing difficulties
People who are not tolerant to opioids.
(For more information on respiratory depression with fentanyl, click Precautions and Warnings With Fentanyl. This article offers more detailed drug warnings relating to things like allergic reactions, serious side effects, and more.)
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
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