>Schedule II drugs, substances, or chemicals are defined as drugs with a high potential for abuse, with use potentially leading to severe psychological or physi

>Schedule II drugs, substances, or chemicals are defined as drugs with a high potential for abuse, with use potentially leading to severe psychological or physical dependence That describes Fentanyl very well. Compare that to... >Schedule I drugs, substances, or chemicals are defined as drugs with no currently accepted medical use and a high potential for abuse There are clear uses for Fentanyl. However, you could argue that we could phase out use of Fentanyl for any procedure in favor of other drugs and I wouldn't be opposed (which would shift it up to Schedule 1).