On 20 April 2026, we detected a high amount of Diacetylmorphine (heroin) and two yet unidentified nitazenes in a sample submitted as heroin. The sample was obtained in Vienna. The effect was described as unexpectedly strong and the duration of action as long.

Due to the high potency of synthetic opioids and the increased risk of overdoses, we strongly advise against their use!

Further information here:

German: checkit!_Warnings_2026_Nitazene

English: checkit!_Warnings_2026_Nitazenes_engl