Even though the boxes say it should last 72 hours, my pain doctor( who was wonderful) prescribed me to changed my patches every 48 hours. I take two at 75 mcg... so i see now higher than most.
I never have gone up in over 7-9 years but recently did begin to have severe breakthrough pain. I have noticed that losing or gaining weight can affect your patches how well they work.
- Fentanyl Information for Consumers
- Fentanyl Information for Healthcare Professionals (includes dosage details)
- Side Effects of Fentanyl (detailed)
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