Drug information provided by: Micromedex

It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it.

Fentanyl is a medicine that can harm or cause death to a child. Patients and caregivers should keep this medicine out of the reach of children. Carefully dispose of any partially used units or unused medicine properly.

This medicine may be habit-forming. If you feel that the medicine is not working as well, do not use more than your prescribed dose. Call your doctor for instructions.

Do not use this medicine for minor aches and pains (eg, headaches, migraines) or after surgery or injuries.

This medicine will add to the effects of alcohol and other CNS depressants (medicines that can make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for allergies or colds; sedatives, tranquilizers, or sleeping medicine, other prescription pain medicine or narcotics, medicine for seizures or barbiturates; muscle relaxants, or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the medicines listed above while you are using this medicine.

Fentanyl may cause some people to become drowsy, confused, or dizzy. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert. Check with your doctor if you have confusion or drowsiness that is severe enough to interfere with your daily activities.

Using narcotics for a long time can cause severe constipation. To prevent this, your doctor may tell you to take laxatives, drink fluids, or increase the amount of fiber in your diet. Follow the directions carefully. Constipation that continues can lead to more serious problems.

If you have been using this medicine regularly for several weeks or more, do not suddenly stop using it without checking with your doctor. You may be directed to gradually reduce the amount you are using before stopping it completely to lessen the chance of withdrawal side effects.

Using too much fentanyl, or taking too much of another narcotic with fentanyl, may cause an overdose. If this occurs, get emergency help right away. An overdose can cause severe breathing problems (breathing may even stop), unconsciousness, and death. Serious signs of an overdose include very slow breathing (fewer than 8 breaths each minute) and drowsiness that is so severe you are not able to answer when spoken to, or if asleep, cannot be awakened.

The Actiq® product contains sugar and may increase your chance for tooth decay. Schedule regular dentist visits if you are using Actiq®.

Do not use this medicine if you have taken a monoamine oxidase (MAOI) inhibitor (eg, isocarboxazid phenelzine, selegiline, tranylcypromine, Eldepryl®, Marplan®, Nardil®, or Parnate®) in the past 2 weeks.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (eg, St. John's wort) or vitamin supplements.