N&PD Moderators: Skorpio Forums Media, Science and Research Neuroscience and Pharmacology Discussion Why do codeine and hydrocodone have the same formula but different highs? 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 #5 All (3) Like (3) Aug 4, 2020 Anonymous Dissident Bluelighter Messages 1,255 Reaction score 845 Points 30 G Aug 1, 2020 G_Chem Bluelight Crew Messages 7,872 Reaction score 10,422 Points 245 Aug 1, 2020 F.U.B.A.R. Bluelight Crew · From Eating shit as per fuckin usual... Messages 26,350 Reaction score 18,116 Points 770 Loading… Forums Media, Science and Research Neuroscience and Pharmacology Discussion Why do codeine and hydrocodone have the same formula but different highs?