This is an unofficial archive of PsychonautWiki as of 2025-08-11T15:14:44Z. Content on this page may be outdated, incomplete, or inaccurate. Please refer to the original page for the most up-to-date information.
Talk:Fentanyl
You put the duration info of a specific patch for the transdermal section. Different patches can have different durations, a transdermal dose of fentanyl will likely last 3-4h like most other roa's.