This discussion made me realize that Dope and Dopamine did not share roots: https://www.deseretnews.com/article/571007/Similarity-between-dopamine-and-dope-is-

This discussion made me realize that Dope and Dopamine did not share roots: https://www.deseretnews.com/article/571007/Similarity-between-dopamine-and-dope-is-coincidence.html https://www.deseretnews.com/article/571007/Similarity-betwee... http://blog.oxforddictionaries.com/2015/06/dope-etymology-history/ http://blog.oxforddictionaries.com/2015/06/dope-etymology-hi... http://www.etymonline.com/index.php?term=dopamine http://www.etymonline.com/index.php?term=dopamine "1959, from DOPA, the amino acid (from first letter of elements of dioxyphenylalanine), + -amine."