PREPARATIONS: Transdermal systems labeled as delivering 12, 25, 50, 37.5, 62.5, 75, 87.5, or 100 mcg/hour.
The use of fentanyl with other central nervous system depressants can increase the ability of fentanyl to depress breathing, depress the brain, sedate, and lower blood pressure.
Other drugs that may result in slow heart rates in patients when used with fentanyl, and therefore, should be used cautiously include:
- Antipsychotics, for example, Thorazine and Stelazine, haloperidol (Haldol)
- Anxiolytics, for example, diazepam (Valium), lorazepam (Ativan), and zolpidem (Ambien)
- Certain antihistamines, for example, diphenhydramine (Benadryl), and hydroxyzine (Vistaril)
- Barbiturates, for example, phenobarbital (Donnatal)
- Tricyclic antidepressants, for example, amitriptyline (Elavil, Endep) and doxepin (Sinequan), ethanol
- Skeletal muscle relaxants, for example, carisoprodol (Soma), cyclobenzaprine (Flexeril), and baclofen (Lioresal). The use of fentanyl with amiodarone (Cordarone) may result in slow heart rates.
Quick GuideChronic Pain: Causes, Solutions and Management
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Use the pill identifier tool on RxList.