Since the beginning of July checkit! tested a number of substances of health concern. Among other things, four alleged speed samples were again found to contain the new psychoactive substance 4-Methylamphetamine (4-MA) identified. In addition to amphetamine and caffeine, each sample contained 4-MA in varying doses (up to 228 milligrams per gram). As several deaths have already occurred throughout Europe in connection with the consumption of 4-MA, we strongly advise against its use! In addition, a substance brought for analysis as MDMA in powder form contained the ketamine derivative Methoxetamine found. Deaths have also been reported in connection with the consumption of methoxetamine. Due to these facts and because an unexpected dissociative effect can be very unpleasant under certain circumstances, we strongly advise caution.

All warnings and unexpected results in detail you will find here.