At the end of October / beginning of November 2025, we tested a number of substances of particular health concern. In addition to some (very) high-dose ecstasy tablets, some ecstasy tablets also contained one or more other psychoactive substances, often in small quantities or traces. Two samples submitted for analysis as „speed“ contained the following instead Cathinone 2-MMC. A sample submitted as MDMA instead showed Mephedrone (4-MMC) on. In several THC cannabis samples, one CBD cannabis sample and one H4 CBD sample, various synthetic cannabinoids were detected in addition to cannabis (AB-CHMINACA, MDMB-BUTINACA, MDMB-PINACA). None of the samples submitted for analysis as 3-MMC contained 3-MMC, but all contained a different synthetic cathinone: N-Ethylpentedron, Brephedrone (4-BMC) or 2-MMC.

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 week 46 - 2025