Seek emergency care if you experience signs of an allergic reaction to fentanyl film, which may include: difficulty breathing, hives or rash, swelling of the face, tongue, lips or throat. Contact your doctor right away if you have shallow, weak breathing; drowsiness with slow breathing; cold, clammy skin; or lightheadedness, fainting, dizziness or confusion. Possible side effects that are less serious may include: vomiting, nausea, stomach pain or constipation; drowsiness, dizziness or headaches; swelling; mouth sores or pain where film was attached to inside of mouth.
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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.