Daily users of benzodiazepines are also at a higher risk of experiencing psychotic symptomatology such as delusions and hallucinations .  A study found that of 42 patients treated with alprazolam, up to a third of long-term users of the benzodiazepine drug alprazolam ( Xanax ) develop depression .  Studies have shown that long-term use of benzodiazepines and the benzodiazepine receptor agonist nonbenzodiazepine Z drugs are associated with causing depression as well as a markedly raised suicide risk and an overall increased mortality risk.  
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