Benzodiazepines are a controversial treatment for anxiety in patients with substance use disorders. Concerns include risk of addiction, overdose, and diversion. But benzodiazepines are among the most effective and well-tolerated treatments for anxiety, and are safe for the majority of patients who take them. Though not appropriate for all cases, particularly in those with an active opioid use disorder, benzodiazepines should be considered as a treatment for patients with substance use disorders after careful weighing of benefits and harms.