Lorazepam efficacy for anxiety disorders
Pro Research Analysisby 
Searched over 200M research papers
Lorazepam Efficacy for Anxiety Disorders: Clinical Trial Evidence
Lorazepam for Generalized Anxiety Disorder (GAD) and Neurotic Anxiety
Multiple clinical trials have shown that lorazepam is effective in reducing symptoms of anxiety in adults with generalized anxiety disorder and neurotic anxiety. In a four-week double-blind study, lorazepam was clearly superior to placebo, with patients experiencing significant improvements on both physician- and self-rated anxiety scales, and minimal side effects reported . Similar findings were observed in a larger study involving patients with moderate to severe anxiety and depressive symptoms, where lorazepam provided better anxiety relief than placebo, with statistically and clinically significant differences and no significant toxicity .
Comparison with Other Anxiolytics: Buspirone, Clobazam, Suriclone, and Etifoxine
When compared to other anxiolytics, lorazepam generally shows similar or slightly faster efficacy in the short term. In a 10-week trial comparing lorazepam, buspirone, and placebo, both active drugs were more effective than placebo in reducing anxiety symptoms, but lorazepam showed a faster onset of improvement. However, after discontinuation, symptoms in the lorazepam group tended to worsen, while buspirone-treated patients maintained their improvement . Another study found that lorazepam and clobazam improved anxiety more quickly than buspirone, but after three weeks, all three drugs were equally effective, and the benefits persisted after withdrawal without rebound anxiety .
A trial comparing lorazepam, suriclone, and placebo in patients with GAD or panic disorder found that all groups improved significantly, with lorazepam and suriclone showing a slightly better early response but no difference in efficacy or side effects after four weeks . In a study of adjustment disorders with anxiety, lorazepam and etifoxine were equally effective after four weeks, but etifoxine had fewer rebound anxiety cases after treatment ended .
Lorazepam in Panic Disorder
Lorazepam has also demonstrated efficacy in treating panic disorder. In a direct comparison with alprazolam, both drugs were similarly effective in reducing panic attacks and phobic behavior, though higher doses were required than for generalized anxiety .
Lorazepam Versus Placebo and Other Comparators
In studies comparing lorazepam to placebo and other novel anxiolytics, lorazepam consistently showed greater reductions in anxiety scores. For example, in a six-week trial with patients with a history of GAD, lorazepam and lesopitron both led to greater improvements than placebo . In another study, lorazepam and pregabalin both significantly reduced anxiety symptoms compared to placebo, with lorazepam showing the largest decrease in anxiety scores, though it was associated with more dropouts and common side effects like drowsiness and dizziness .
Safety and Withdrawal Considerations
Lorazepam is generally well-tolerated, with drowsiness being the most common side effect. Studies indicate that, when withdrawn gradually, lorazepam does not lead to significant rebound anxiety or withdrawal syndrome . However, abrupt discontinuation may lead to a return of symptoms, and some studies suggest that non-benzodiazepine anxiolytics may have a more stable effect after stopping treatment Laakmann1998Nguyen2006.
Conclusion
Lorazepam is an effective short-term treatment for anxiety disorders, including generalized anxiety disorder and panic disorder, with rapid onset of action and significant symptom reduction compared to placebo. Its efficacy is comparable to other benzodiazepines and non-benzodiazepine anxiolytics, though it may act more quickly. Side effects are generally mild, but careful management is needed during withdrawal to avoid symptom recurrence. Non-benzodiazepine alternatives may offer more stable long-term outcomes after discontinuation Dg1978Laakmann1998De1989+6 MORE.
Sources and full results
Most relevant research papers on this topic
Clinical assessment of the safety and efficacy of lorazepam, a new benzodiazepine derivative, in the treatment of anxiety.
Lorazepam, a new benzodiazepine derivative, is significantly superior to placebo in treating neurotic anxiety and its related symptoms, with only one reported side effect, urinary retention.
Buspirone and lorazepam in the treatment of generalized anxiety disorder in outpatients
Both buspirone and lorazepam effectively reduce anxiety symptoms in outpatients with generalized anxiety disorder, but the differences between the two drugs become smaller over time.
Studies with oral lorazepam in anxiety neurosis associated with depressive symptomatology.
Lorazepam provides better anxiety relief than placebo in patients with significant depressive symptomatology, without significant toxicity.
[Efficacy and withdrawal of clobazam, lorazepam and buspirone in the treatment of anxiety disorders].
Clobazam and lorazepam effectively improved anxiety more quickly than buspirone, with comparable efficacy after 3 weeks of therapy and lasting effects after discontinuation.
Benzodiazepine treatment of panic disorder: a comparison of alprazolam and lorazepam.
Alprazolam and lorazepam show similar efficacy in reducing panic attacks and phobic behavior, but both require high doses for effective treatment.
Efficacy and Safety of Lesopitron in Outpatients with Generalized Anxiety Disorder
Lesopitron and lorazepam show beneficial effects for 40% of generalized anxiety disorder patients with recurrent anxiety disorder, suggesting further therapeutic trials are warranted.
DOI