R P J Koning - Does Street XTC contain MDMA or not?

Street-market XTC tablets are frequently analyzed by the Dutch Drug Information and Monitoring System to investigate their actual composition compared to user expectations. A significant share of the analyzed tablets contain substances other than MDMA, suggesting that the illicit market is subject to fluctuations in both composition and potency, with recent trends showing an increase in higher-dose pills. While MDMA is the expected primary component of XTC, additives and substitutions occur, potentially complicating health outcomes for recreational users. Similar monitoring of LSD shows a generally stable market, though new potent chemical variations have recently been appearing, underscoring the dynamic and sometimes hazardous nature of unregulated supply chains.