N&PD Moderators: Skorpio Forums Media, Science and Research Neuroscience and Pharmacology Discussion What determines how euphoric an opioid is? JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Members who reacted to message #8 All (2) Like (2) E Aug 19, 2023 EPL1 Bluelighter Messages 1,282 Reaction score 105 Points 145 May 24, 2023 Rectify Bluelighter Messages 10,270 Reaction score 2,230 Points 420 Loading… Forums Media, Science and Research Neuroscience and Pharmacology Discussion What determines how euphoric an opioid is?