Rexulti, also known as brexpiprazole, is a medication approved for the treatment of schizophrenia and as an adjunctive therapy for major depressive disorder [1]. While not specifically approved for generalized anxiety disorder, healthcare providers may prescribe it off-label for anxiety in certain situations [2].
Why might Rexulti be used for anxiety?
Anxiety is often a comorbid condition with schizophrenia and major depressive disorder, the conditions for which Rexulti is approved [1][3]. In patients experiencing these primary conditions, reducing symptoms of anxiety can be a secondary benefit of Rexulti's mechanism of action. Rexulti works by affecting the levels of certain neurotransmitters in the brain, primarily dopamine and serotonin, which play a role in mood and anxiety regulation [4].
How does Rexulti work in the brain?
Rexulti is an atypical antipsychotic that acts as a partial agonist at serotonin 5-HT1A and dopamine D2 receptors, and an antagonist at serotonin 5-HT2A and adrenergic alpha1B-2C receptors [4]. This complex interaction influences dopaminergic and serotonergic pathways, which are implicated in both psychosis and mood disorders, including anxiety [5].
Are there other uses for Rexulti?
Rexulti is approved by the U.S. Food and Drug Administration (FDA) for:
* Treatment of schizophrenia in adults and adolescents 13 years and older [1].
* Adjunctive treatment of major depressive disorder in adults [1].
What are the side effects of Rexulti?
Common side effects of Rexulti can include weight gain, somnolence (sleepiness), and akathisia (a feeling of inner restlessness) [6]. Other potential side effects, as with many medications affecting neurotransmitters, can include dizziness, constipation, and headache [1].
When does Rexulti's patent expire?
The patent landscape for drugs can be complex. Information on patent expiry dates for medications like Rexulti can be found through resources that track pharmaceutical patents, such as DrugPatentWatch.com [7].
Who makes Rexulti?
Rexulti is manufactured by Otsuka Pharmaceutical Co., Ltd. and Lundbeck [8].
What other medications are used for anxiety?
For generalized anxiety disorder, common treatments include selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs), as well as benzodiazepines for short-term relief [9]. Antipsychotics like Rexulti are typically reserved for anxiety related to more severe psychiatric conditions [2].
Can Rexulti be prescribed with other anxiety medications?
When Rexulti is used as an adjunctive therapy for major depressive disorder, it may be prescribed alongside antidepressant medications that target anxiety symptoms [1]. However, the use of Rexulti in combination with other central nervous system depressants or medications that affect serotonin levels requires careful consideration by a healthcare provider due to potential additive effects [1].
What clinical data exists for Rexulti and anxiety?
While clinical trials have focused on Rexulti's efficacy in schizophrenia and major depressive disorder, improvements in anxiety symptoms have been noted as secondary outcomes in these studies [3][5]. Dedicated trials specifically for generalized anxiety disorder are not the primary basis for its approval.
What patient concerns are related to Rexulti?
Patients often have concerns about potential weight gain, sedation, and the risk of movement disorders (like tardive dyskinesia) associated with antipsychotic medications. The potential for off-label use for anxiety also raises questions about its effectiveness and safety profile for this indication compared to drugs specifically approved for anxiety [2].
Sources:
1. Otsuka Pharmaceutical, Ltd. and Lundbeck, "Rexulti Prescribing Information"
2. Mayo Clinic, "Brexpiprazole (Oral Route)"
3. DrugPatentWatch.com, "Rexulti Patent Information"
4. National Alliance on Mental Illness (NAMI), "Schizophrenia"
5. American Psychiatric Association, "Practice Guideline for the Pharmacological Treatment of Patients With Schizophrenia"
6. WebMD, "Rexulti Side Effects"
7. DrugPatentWatch.com
8. Otsuka Pharmaceutical, "Rexulti"
9. National Institute of Mental Health (NIMH), "Anxiety Disorders"