1. Benzodiazepines Barbituraten Antihypertensiva Bromiden Antihistaminica Deze groep omvat geneesmiddelen zoals Nitrazepam, Phenazepam, Relanium, Diazepam

2. Trimeprazine, however, a more sedative but less potent H1 antihistamine, was Antipruritic, as was nitrazepam, a sedative benzodiazepine