Do you sell this product? Register with us.

Fentanyl Information

Fentanyl is a prescription medicine. Pain are some of its major therapeutic uses.

Medical history of the patient along with age and gender determines the dosage of Fentanyl. Dosage also depends on the route of administration and your chief complaint for which the drug is prescribed. For detailed information on this, read through the dosage section.

Common side effects of Fentanyl include Headache, Dizziness, Nausea or vomiting. Such side effects of Fentanyl normally do not last long and go away once the treatment is completed. Please speak with your doctor if these side effects worsen or persist for a longer duration.

It is also important to note that Fentanyl has a Moderate effect for pregnant women and Safe effect on lactating mothers. Warnings related to Fentanyl's effects on the liver, heart and kidney, if any, have been listed below.

Fentanyl is contraindicated in people with pre-existing medical conditions like Bradycardia (Slow Heart Rate), Angina, Asthma as it can result in adverse effects. The section on Fentanyl contraindications lists all such conditions.

Drug reaction of Fentanyl with other medicines has been reported. See below for a complete list.

Along with the above-mentioned precautions, remember that taking Fentanyl is considered not safe while driving, and is not addictive.

  1. Fentanyl Benefits & Uses
  2. Fentanyl Dosage & How to Take
  3. Fentanyl Side Effects
  4. Fentanyl Related Warnings
  5. Severe Interaction of Fentanyl with Other Drugs
  6. Fentanyl Contraindications
  7. Frequently asked Questions about Fentanyl
  8. Fentanyl Interactions with Food and Alcohol

Fentanyl Benefits & Uses

Fentanyl is used to treat the following -

  1. Pain Primary

Fentanyl Dosage & How to Take

Find the right dosage based on disease and age

Log in to view medicine dosage

Ingredients of Fentanyl


Fentanyl Side Effects

Based on research, the following side effects have been observed when Fentanyl is used -

  1. Headache Common
  2. Dizziness Common
  3. Nausea or vomiting
  4. Weakness
  5. Dehydration Common
  6. Edema Common
  7. Fatigue Common
  8. Anemia Common
  9. Constipation Common
  10. Confusion
  11. Tremor
  12. Agitation
  13. Rash

Fentanyl Related Warnings

Is the use of Fentanyl safe for pregnant women?

Fentanyl may have some side effects during pregnancy. Pregnant women should discontinue the use of Fentanyl, and talk to their doctor, if they notice any discomfort.


Is the use of Fentanyl safe during breastfeeding?

Fentanyl is safe for breastfeeding women.


What is the effect of Fentanyl on the Kidneys?

Very few cases of side effects of Fentanyl on kidney have been reported.


What is the effect of Fentanyl on the Liver?

Fentanyl is rarely harmful for the liver.


What is the effect of Fentanyl on the Heart?

Fentanyl may have mild side effects on the heart. Most people will never see any effect on the heart.


Severe Interaction of Fentanyl with Other Drugs

Fentanyl should not be taken with following medicines due to severe side effects it may cause to patients -

Fentanyl Contraindications

If you are suffering from any of the following diseases, you should not take Fentanyl unless your doctor advises you to do so -

  1. Bradycardia (Slow Heart Rate)
  2. Angina
  3. Brain Tumour
  4. Asthma
  5. Low Blood Pressure (Hypotension)

Frequently asked Questions about Fentanyl

Is this Fentanyl habit forming or addictive?

Yes, you can get addicted to Fentanyl. It is essential that you take [medicine] only after doctor's recommendation.


Is it safe to drive or operate heavy machinery when consuming?

After taking Fentanyl, you should not drive or work on any heavy machine, as Fentanyl can make you drowsy.


Is it safe?

Fentanyl is safe but it should be taken as per the doctor's prescription.

translation missing: en.yes-but-only-in-limited-use

Is it able to treat mental disorders?

Yes, Fentanyl is useful in treating mental disorders.


Fentanyl Interactions with Food and Alcohol

Interaction between Food and Fentanyl

Information is not available on the interaction of any foods with Fentanyl, due to a lack of research on this.


Interaction between Alcohol and Fentanyl

Consult your doctor before consuming alcohol while taking Fentanyl as it can have severe side effects.

This medicine data has been created by -
Vikas Chauhan
B.Pharma, Pharmacy
3 Years of Experience


  1. KD Tripathi. [link]. Seventh Edition. New Delhi, India: Jaypee Brothers Medical Publishers; 2013: Page No 382,384
  2. April Hazard Vallerand, Cynthia A. Sanoski. [link]. Sixteenth Edition. Philadelphia, China: F. A. Davis Company; 2019: Page No 554-563
Ask your health query now and get connected with a doctor within 10 minutes!