Ketamine? Combined with MDMA and its analogues??? In which country? Do you have links to drug reports / analysis?
804 results for MDMA + anything else: https://www.ecstasydata.org/search.php?search_field=adv&name...
50 results for MDMA + ketamine: https://www.ecstasydata.org/search.php?search_field=adv&name...