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MRP: Rs. 40.63 for 1 vial(s) (2 ML injection each)
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Composition for FENT

Fentanyl(50 mcg)

food interaction for FENT

alcohol interaction for FENT

pregnancy interaction for FENT

lactation interaction for FENT

There is no data available. Please consult doctor before consuming the drug.
There is no data available. Please consult doctor before consuming the drug.
There is no data available. Please consult doctor before consuming the drug.
There is no data available. Please consult doctor before consuming the drug.


Fentanyl(50 mcg)


Fent 50mcg injection is used for Pain, Anaesthesia

How it works

Fent 50mcg injection belongs to a class of drugs called opioid analgesics. It acts by inhibiting certain receptors in the brain associated with perception of pain.

Common side effects

Drowsiness, Allergic skin rash, Back pain, Bloody diarrhea, Numbness, Burning sensation, Tingling sensation, Central nervous system depression, Confusion, Dizziness, Dry mouth, Difficulty in urination, Feeling thirsty, Feeling of cold, Hallucination, Headache, Increased sweating, Indigestion, Insomnia, Mood changes, Stomach pain, Tremor, Weakness, Vomiting, Nausea, Loss of appetite


No substitutes found

Top Physicians

  • Dr. M. K. Singh
    MBBS, MD
  • Dr. Sushila Kataria
    MBBS, MD, Diploma
  • Dr. Joy Chakraborty
    MBBS, MD
  • Dr. R. R. Dutta
    MBBS, MD
  • Dr. P. R. Aryan
    MBBS, Diploma

Expert advice for FENT

  • Do not consume fentanyl in doses more than that as prescribed by the doctor as it has a potential for addiction.
  • Seek immediate medical attention if you experience difficulty in breathing after administration fentanyl.
  • Avoid exposure to high temperature conditions such sauna bath, hot tub bath, sun bathing as this may lead to increased absorption of fentanyl causing overdose and adverse effects.
  • Do not drive or operate machinery while taking fentanyl as it may cause dizziness. 
  • Consult your doctor before taking  fentanyl if you have breathing problems, low blood pressure, heart, liver, chronic lung or kidney diseases,  brain tumor, head injury, or myasthenia gravis (neuromuscular disease characterized by progressive weakness of  muscles and unusual tiredness).
  • Do not consume this drug if are allergic to fentanyl or any of its ingredients or any other opioid analgesic.
  • Do not consume this drug if you are regularly using opioid medication for management of persistent pain.
  • Patients who are suffering from mild pain should not consume this drug.
  • Inform your doctor if you are or planning to get pregnant or breastfeeding. 

Frequently asked questions for FENT


Q.Is fentanyl an opioid/ morphine/ barbiturate?
Fentanyl is an opioid analgesic. It is not morphine or barbiturate

Q.Is fentanyl addictive/ controlled substance?
Fentanyl is a controlled substance and has got addictive potential. Always follow the doctor's instruction regarding its use

Q.Does fentanyl cause constipation/ hypotension?
Fentanyl may cause constipation and hypotension. Please consult your doctor if you experience such side effects.


Content on this page was last updated on 20 June, 2015, by Dr. Varun Gupta (MD Pharmacology)