A member asked:

I think its better to change my fentanyl patches after two days is this common?

A doctor has provided 1 answer

Your doc's opinion: It typically takes a bit longer for Fentanyl patches to really get up to steady blood levels enough to start affecting severe pain. Unless of course, you are referring to side effects in which case those could appear immediately. Talk with your doctor and see what they advise.

Answered 5/22/2014

4.1k views

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I am having urination problems on the fentanyl patch. Is this common?

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