People seem to still be arguing about that - [1] and [2] argue that they're directly correlated in ketamine treatment, and I can't begin to guess what research

People seem to still be arguing about that - [1] and [2] argue that they're directly correlated in ketamine treatment, and I can't begin to guess what research on {ar,es}ketamine and metabolite efficacy is going to produce when one of these becomes readily available. [1] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4065787/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4065787/ [2] - https://www.ncbi.nlm.nih.gov/pubmed/29501990 https://www.ncbi.nlm.nih.gov/pubmed/29501990