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In this Article

• What is fentanyl buccal (Fentora)?
• What are the possible side effects of fentanyl buccal (Fentora)?
• What is the most important information I should know about fentanyl buccal (Fentora)?
• What should I discuss with my healthcare provider before using fentanyl buccal (Fentora)?
• How should I use fentanyl buccal (Fentora)?
• What happens if I miss a dose (Fentora)?
• What happens if I overdose (Fentora)?
• What should I avoid while using fentanyl buccal (Fentora)?
• What other drugs will affect fentanyl buccal (Fentora)?
• Where can I get more information?

What happens if I miss a dose (Fentora)?

Since fentanyl buccal tablets are taken as needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose (Fentora)?

Seek emergency medical attention if you think you have used too much of this medicine or if anyone else has accidentally swallowed it. A fentanyl overdose can be fatal. Overdose symptoms may include slow breathing, extreme weakness or dizziness, pinpoint pupils, cold and clammy skin, or fainting.

What should I avoid while using fentanyl buccal (Fentora)?

Fentanyl can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.

Avoid drinking alcohol, which can increase drowsiness or breathing problems caused by fentanyl.

Grapefruit and grapefruit juice may interact with fentanyl and lead to potentially dangerous effects. Discuss the use of grapefruit products with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

What other drugs will affect fentanyl buccal (Fentora)?

Cold or allergy medicine, sedatives, sleeping pills, muscle relaxers, and medicine for seizures, depression or anxiety can add to sleepiness caused by fentanyl buccal. Tell your doctor if you regularly use any of these medicines, or any other narcotic pain medicine.

Before using this medication, tell your doctor if you are using any of the following drugs:

• aprepitant (Emend);
• diltiazem (Cardizem, Cartia, Dilacor, Tiazac);
• verapamil (Calan, Covera, Isoptin, Verelan);
• an antibiotic such as clarithromycin (Biaxin) or erythromycin (E-Mycin Ery-Tab, E.E.S.);
• antifungal medication such as fluconazole (Diflucan), itraconazole (Sporanox), or ketoconazole (Nizoral); or
• HIV medicines such as fosamprenavir (Lexiva), ritonavir (Norvir), or nelfinavir (Viracept).

This list is not complete and there may be other drugs that can interact with fentanyl buccal. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about fentanyl buccal.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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