Warning: Fentanyl in heroin
checkit! has developed a "China White" - Heroin sample was identified as having a particularly harmful composition.
In addition to an above-average content of diacetylmorphine, the sample also contained 6-monoacetylmorphine, caffeine, noscapine, an unknown substance and the highly potent synthetic opioid fentanyl.
Fentanyl is a synthetic opioid and about one hundred times more potent than morphine. Fentanyl has already been associated with numerous life-threatening overdoses, which have also led to deaths as a result of respiratory depression. Mixed use with other centrally depressant substances (as contained in this sample) is strongly discouraged. Furthermore, serious interactions with a number of medications are known.
Reports of synthetic opioids are increasing across Europe. Over the course of the last year, checkit! has also occasionally detected synthetic opioids in various substance samples.
The term "synthetic opioids" refers to substances that are produced synthetically and have a similar effect to natural opiates (e.g. morphine) or heroin. The potency of these substances is often many times higher than that of morphine, which makes dosing difficult or even impossible without a laboratory scale. Even careless handling of some substances can be life-threatening.
China White is often used in online forums and in the literature as a name for a synthetic opioid, the fentanyl analogue α-methylfentanyl, but also for mixtures of heroin with synthetic opioids.
Due to the above-mentioned high potency of synthetic opioids and the increased risk of respiratory depression (especially through the combination of two centrally depressant substances), we strongly advise against their use.
Further information on synthetic opioids can be found at:
https://checkit.wien/substanzen/synthetische-opioide/
Current warnings June 2018
Since the beginning of June 2018, we have tested a number of substances that pose a particular health risk. In addition to caffeine, a supposed ecstasy tablet contained the new psychoactive substances 4-CMC (Clephedrone), 4-CEC (4-chloroethcathinone) and 4-BEC (4-bromoethcathinone) was identified. In three further samples submitted for analysis as ecstasy, in addition to the expected active substance MDMA, a unknown substance detected. Two samples submitted as mephedrone showed the new psychoactive substances 4-CMC and 4-CEC resp. 4-CMC, 4-CEC and 4-BEC. In addition, an alleged speed sample instead of the expected amphetamine Methamphetamine identified.
Under the following link, all samples that have been submitted to us in the period from 01.06.2018 until today checkit! were analysed and contained new psychoactive substances and/or were classified as high doses, unexpected or of particular health concern.
Current warnings May 2018
Since the beginning of May 2018, we have tested a number of substances of particular health concern. In a sample submitted for analysis as mephedrone, the three new psychoactive substances 4-CEC (4-chloroethcathinone), 4-CMC (Clephedrone) and 4-BEC (4-bromoethcathinone) was identified. In another sample submitted for analysis as mephedrone, a previously unknown substance was detected in addition to mephedrone. Caffeine was found as an extender in various samples (speed, MDMA, ketamine, cocaine, 2C-B). Many of the samples submitted for analysis as cocaine had a high cocaine content and admixtures of levamisole.
Current warnings April 2018
Since the beginning of April 2018, we have tested a number of substances that pose a particular health risk. In addition to some (very) high-dose ecstasy tablets, various new psychoactive substances were detected. In two as Mephedrone samples submitted for analysis were found to contain the new psychoactive substance 4-Chloroethcathinone (4-CEC) proven. For the first time checkit! the hallucinogenic AL-LAD detected in a sample submitted as such.
Current warnings March 2018
Since the beginning of March 2018, we have tested a number of substances of particular health concern. In addition to a series of (very) high-dose ecstasy tablets, one supposed ecstasy tablet contained MDMA as well as the expected MDMA, Methylone and Dimethylone (bk-MDDMA). Almost all samples submitted for analysis as alleged speed contained amphetamine Caffeine in different proportions.
Current warnings February 2018
Since the beginning of February 2018, we have tested a number of substances of particular health concern. In a sample submitted for analysis as an ecstasy tablet, the new psychoactive substance 2C-P (2,5-dimethoxy-4-propylphenethylamine) identified. Instead of the expected active ingredient, a supposed MDMA sample showed the new psychoactive substance Clephedrone (4-CMC) from the cathinone group.
Current warnings February 2018
Current warnings January 2018
Since the beginning of January 2018, we have tested a number of substances of particular health concern. In addition to a large number of amphetamine samples laced with caffeine, many samples submitted as alleged ecstasy contained high to very high levels of the active ingredient MDMA. In one sample submitted as an unknown substance, the new psychoactive substances 4-chloro-alpha-PVP (4Cl-PVP, 4-chloro-alpha-pyrrolidinovalerophenone) and N-ethylhexedrone (NEH) was identified. An alleged cocaine sample contained cocaine, amphetamine, caffeine and the two new psychoactive substances N-ethylhexedrone (NEH) and MPHP (4'-methyl-α-pyrrolidinohexiophenone).
Current warnings December 2017
Since the beginning of December 2017, we have tested a number of substances of particular health concern. In addition to a series of ecstasy tablets with a (very) high MDMA content, an unknown substance was identified in two tablets alongside the expected active ingredient MDMA. The hallucinogenic substance 2C-B was detected in a further two supposed ecstasy tablets. The new psychoactive substance Clephedrone (4-CMC) was identified in one sample submitted as MDMA, one as mephedrone and one as cocaine. In addition to clephedrone (4-CMC), the following cathinone derivatives were found in various samples: Methylone (bk-MDMA), Dimethylone (bk-MDDMA), 4-Chloroethcathinone (4-CEC), Methyl ethyl cathinone (4-MEC).
Current warnings December 2017
Current warnings November 2017
Since the beginning of November 2017, we have tested a number of substances of particular health concern. In addition to the expected active ingredient MDMA, one tablet sold as ecstasy contained a unknown substance identified. In addition to MDMA, another ecstasy tablet contained the new psychoactive substance Methylone (3,4-methylenedioxymethcathinone, bk-MDMA) on. In addition to the expected amphetamine, a sample given as speed also contained caffeine and the hallucinogenic substance 2C-E (2,5-dimethoxy-4-ethylphenethylamine).
Current warnings November 2017