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 #3 All (3) Like (3) Aug 4, 2020 Anonymous Dissident Bluelighter Messages 1,255 Reaction score 845 Points 30 Aug 2, 2020 X11400 Bluelighter · 27 · From New York Messages 233 Reaction score 28 Points 30 Aug 1, 2020 Hylight Bluelighter Messages 9,531 Reaction score 8,615 Points 245 Loading… Forums Media, Science and Research Neuroscience and Pharmacology Discussion Why do codeine and hydrocodone have the same formula but different highs?