Maybe this is the study? First result in google for "cocaine caffeine comparison" https://pubmed.ncbi.nlm.nih.gov/25414797/ https://pubmed.ncbi.nlm.nih.gov/254

Maybe this is the study? First result in google for "cocaine caffeine comparison" https://pubmed.ncbi.nlm.nih.gov/25414797/ https://pubmed.ncbi.nlm.nih.gov/25414797/ or this : https://www.beveragedaily.com/Article/2002/09/02/Coffee-acts-just-like-cocaine-says-scientist https://www.beveragedaily.com/Article/2002/09/02/Coffee-acts... https://www.purdue.edu/newsroom/releases/2016/Q4/mixing-energy-drinks,-alcohol-may-affect-adolescent-brains-like-cocaine.html https://www.purdue.edu/newsroom/releases/2016/Q4/mixing-ener... https://www.purdue.edu/newsroom/releases/2016/Q4/mixing-energy-drinks,-alcohol-may-affect-adolescent-brains-like-cocaine.html https://www.purdue.edu/newsroom/releases/2016/Q4/mixing-ener... they seem to imply something similar what you are stating this one found no such effect on rats: https://www.sciencedirect.com/science/article/abs/pii/S0149763498000207 https://www.sciencedirect.com/science/article/abs/pii/S01497... and most of the articles I found say that caffeine INCREASES the effect of caffeine