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.