How much of the fentanyl is released from the patch after 3 days?
I wear a fentanyl patch and from my understanding it releases a certain amount of the drug over 3 days. My doctor said it takes 12 hours to get in your system and 12 hours to get out. I think if it has been 3 days and you put a new patch on without removing the old one, your body doesn't receive anymore of the drug from the old one because there isn't any medicine left on the patch. I have put one on and forgot about the old one for a few hours but I did not notice any difference.
- Fentanyl Information for Consumers
- Fentanyl Information for Healthcare Professionals (includes dosage details)
- Side Effects of Fentanyl (detailed)
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