ChEck iT! During the last weekend of operations on 21 and 22 January 2011, in addition to the PMA warning listed below a number of health hazards Substances tested: including several tablets bought as "ecstasy" in which piperazine or other ingredients were detected instead of MDMA. Some cocaine samples also had to be warned again due to various admixtures. One Precise display of all warnings and unexpected ingredients you will find here.