What is "meclonazepam"

n. A benzodiazepine derivative, similar in structure to clonazepam, with sedative and anxiolytic effects and antiparasitic activity against ''Schistosoma mansoni''.

Meclonazepam ((S)-3-methylclonazepam) was discovered by a team at Hoffmann-La Roche in the 1970s and is a drug which is a benzodiazepine derivative similar in structure to clonazepam. It has sedative and anxiolytic actions like those of other benzodiazepines, and also has anti-parasitic effects against the parasitic worm Schistosoma mansoni.

Meclonazepam was never used as medicine and instead appeared online as a designer drug.