Hi everyone. I'm after some advise on fentanyl. My partner was subscribed this but as yet hasn't taken it. Up until recently I couldn't even get him to take panadol although now he has progressed to panadiene. Tonight though it's just not working and we think it's time he went on to the fentanyl. I just want to know if anyone has any advise on this drug or if anyone had any side effects I should watch for. The chemist gave me a big print out on this drug and the possible side effects are very scary. Also it says they can take up to 24 hours to work. Did anyone find any pain relief straight away as we need it now, not in 24 hours. He was prescribed the 12mg patch.