What are possible side effects of Fentora?

Fentora (fentanyl), a drug prescribed for the treatment of breakthrough cancer pain, can have an array of different side effects. Some of them can be serious, even life-threatening, side effects. You should call your doctor immediately if you experience any of the following symptoms, which may indicate that you've accidentally gotten an overdose:
  • shallow, slow breathing or shortness of breath
  • confusion or hallucinations
  • extreme drowsiness or dizziness
  • trouble walking
  • difficulty swallowing
  • rapid or slow heartbeat
  • seizures
Fentora can also trigger dry mouth, nausea, stomach pain, gas, heartburn and constipation. In fact, constipation is such a common side effect of taking opioid pain medicines like Fentora that your doctor will probably recommend you use a stool softener, bulk-forming agent, and/or laxative regularly.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.