Demerol vs Fentanyl
Did you mean taking both Demerol and Fentanyl?
Demerol is a pain relief medication (opioid).
Fentanyl is a pain relief medication (opioid).
November 10, 1942
October 4, 1993
Number of discussions around the web Number of discussions + -
Side Effects and Concerns
Pregnancy Category (FDA) OpenClose all pregnancy categories
Adequate and well-controllted studies have failed to demonstrate a risk to the fetus in the first trimester of pregnancy (and there is no evidence of risk in later trimesters).
Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women.
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
There is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience or studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Studies in animals or humans have demonstrated fetal abnormalities and/or there is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience, and the risks involved in use of the drug in pregnant women clearly outweigh potential benefits.
FDA has not classified the drug.
Before taking Demerol during pregnancy, consult your doctor or pharmacists to weigh the risks and benefits.
Before taking Fentanyl during pregnancy, consult your doctor or pharmacists to weigh the risks and benefits.
There may be a negative interaction between Demerol and alcohol.
There may be a negative interaction between Fentanyl and alcohol.
Method of use
Injection, Pill, Syrup
Solution: 75 mg/1.5 mL, 50 mg/5 mL, 50 mg/mL, 100 mg/mL
Syringe: 25 mg/mL, 50 mg/mL, 75 mg/mL, 100 mg/mL
Tablet: 50 mg, 100 mg
Patch: 37.5 mcg/hour, 62.5 mcg/hour, 87.5 mcg/hour, 12 mcg/hr, 25 mcg/hr, 50 mcg/hr, 75 mcg/hr, 100 mcg/hr
Spray: 100 mcg/spray, 200 mcg/spray, 400 mcg/spray, 600 mcg/spray, 800 mcg/spray, 1200 mcg (600 mcg/spray X 2), 1600 mcg (800 mcg/spray X 2)
: 25 mcg/hr, 50 mcg/hr, 75 mcg/hr, 100 mcg/hr
No Food Instructions
Avoid grapefruit juice or discuss with your doctor because grapefruit may increase drug effect.
Meperidine Hcl , Meperidine Hcl/Pf
Fentanyl, Fentanyl Citrate/Pf, Fentanyl Citrate
Interaction between Demerol and Fentanyl: Interaction not known, but may still exist. Always consult your doctor before taking these medications together. Do not stop taking the medications without a physician's advice.
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Demerol -vs- Fentanyl
I passed a 1 cm kidney stone while on Demerol with no pain whatsoever. After a later surgery (cranial) they gave me Fentanyl and the stuff hardly worked at all. I ended up asking for hydrocodone which was more effective. But I've never had much luck with morphine, either. It's odd how a painkiller can work for some but not for others.
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