In mid-July 2025, we tested a number of substances of particular health concern. Several ecstasy tablets contained a (very) high dose of MDMA. In addition to a high dose of MDMA, an ecstasy tablet also contained Amphetamine. In addition to cocaine, some cocaine samples also contained Extenders such as caffeine, levamisole, phenacetin, procaine or mixtures of these was found. A sample submitted as 3-MMC contained instead 2-MMC. Another contained 4-CMC. In two samples submitted for analysis as mephedrone, an additional unknown substance was found. Another mephedrone sample contained instead 2-MMC. One sample that was submitted as O-desmethyltramadol also contained, in addition to the expected active substance, a unknown substance. In addition, a pink powder sold as Tucibi / Pink Cocaine contained a Mixture from Ketamine, MDMA and caffeine proven.

Under the following link, all samples that have been analysed by checkit! since the last warnings and classified as high-dose, unexpected or of particular health concern are presented in detail: Current warnings KW 30 - 2025