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Whatnis the difference between fentanyl and norfentanyl

A 38-year-old member asked:
Dr. Lori Wagner
Internal Medicine 28 years experience
Half-life & delivery: Both are opioids but stay in your body for different lengths of time (half-life) and, of course differ in their delivery (oral versus patch).
Dr. Gary Ritholz
Anesthesiology 31 years experience
Both narcotics: Fentanyl and Oxycontin are both narcotics. Fentanyl is normally an intravenous medication when formulated as a skin patch it delivers a constant dos... Read More

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A 23-year-old male asked:
Dr. Ihab Ibrahim
Pain Management 30 years experience
Blocks pain : Fentanyl is an opioid analgesic. Fentanyl interacts predominately with the opioid mu-receptor. These mu-binding sites are distributed in the human bra... Read More
Dr. Richard O'Leary
Anesthesiology 30 years experience
Provide pain relief: Fentanyl patches are small patches like a band-aid. The medicine is mixed into the bandage material. Once it is applied to the skin, the fentanyl, a... Read More
A 52-year-old male asked:
Dr. Patrick Kohlitz
Internal Medicine 12 years experience
Relatively safe: If the fentanyl patch was prescribed by your doctor he/she should have properly reviewed any contraindications. Fentanyl is an opioid medication that... Read More
Dr. William Jenkins
Specializes in Anesthesiology
Not safe,: when fentanyl patches first came out they were used frequently after surgery and quite effective. But the FDA noted problems and issued a black box wa... Read More
Dr. Paul Grin
Pain Management 37 years experience
High risk: for side effects, abuse and potential serious breathing problems and death. Vomiting, constipation,dizziness, drowsiness, or headache, just a few comm... Read More
A 28-year-old male asked:
Dr. Boris Aronzon
Anesthesiology 25 years experience
Narcotic: Fentanyl is very potent synthetic analgetic, known under many commercial names: sublimaze, actiq, durogesic, duragesic, (fentanyl) fentora, matrifen,... Read More
A 43-year-old member asked:
Dr. Harry Kwak
Anesthesiology 14 years experience
Pain relief: Fentanyl works on pain receptors. Its primary use is to alleviate pain. How fast it works depends on how it is given (IV, IM, transdermal). I'll as... Read More
A 42-year-old member asked:
Dr. Romanth Waghmarae
Pain Management 40 years experience
Fentanyl: Usually anywhere from 6-8 hours.
A 41-year-old member asked:
Dr. Alvin Lin
Geriatrics 31 years experience
As long as doc says: Fentanyl is a narcotic used to fight pain. The patch form is typically used for those w/chronic pain. Therefore, one should only take it as long as yo... Read More
A 36-year-old member asked:
Dr. Mark Hoepfner
Surgery 40 years experience
Depends: The main risks with fentanyl would be excessive and/or inappropriate over-usage at home. Deaths from narcotic accidental overdoses are increasing acro... Read More
A 53-year-old female asked:
Dr. David Rosenfeld
Pain Management 28 years experience
For chronic pain: Fentanyl transdermal patch is used in chronic pain management. The patches work by releasing fentanyl into body fats, which then slowly release the dr... Read More
A 35-year-old member asked:
Dr. Ionel Rad
Anesthesiology 18 years experience
Call Doctor: Fentanyl is a powerful narcotic and the patch has a particular way of working. Therefore, any changes in pain management plan must be directed by md.