Safety Profile

Adverse Reactions
Adverse Reactions Discontinuation Rates Exploratory Analysis

REXULTI® (brexpiprazole) demonstrated consistent safety across 2 clinical trials with a combined total of >500 patients aged 51-90 years

Adverse reactions in ≥2% of patients treated with REXULTI and greater than placebo from two 12-week pivotal studies across all doses

REXULTI adverse events chart from trials REXULTI adverse events chart
REXULTI adverse events chart from trials REXULTI adverse events chart

a1 mg once a day REXULTI dosage is not a recommended dosage for the treatment of agitation associated with dementia due to Alzheimer’s disease.

bDizziness and vertigo are grouped to dizziness.

cSedation and somnolence are grouped to somnolence in the Prescribing Information.

dInitial insomnia and insomnia are grouped to insomnia.

Most common ARs in ≥4% of patients and at least twice the rate placebo: nasopharyngitis and dizziness.

Does not prolong QTc interval to any clinically relevant extent at 4x MRHD for the treatment of agitation associated with dementia due to Alzheimer's disease.

AR, adverse reactions; MRHD, maximum recommended human dose; QTc, corrected QT interval.

REXULTI vs placebo: Similar low discontinuation rates due to adverse reactions from two 12-week pivotal trials across all doses

Discontinuation rates charts REXULTI and Placebo on-treatment charts
Discontinuation rates charts REXULTI and Placebo on-treatment charts

Nervous system disorder discontinuations with REXULTI1

  • ​1 (0.2%) discontinuation for somnolence; 0 discontinuations for sedation
  • 1 (0.2%) discontinuation for dizziness; 0 discontinuation for headache

REXULTI: Extension study primary objective assessed the long-term safety and tolerability2

Study Details2

This extension trial studied REXULTI 2 or 3 mg/day in a Phase III, 12-week, multicenter, non-pivotal, single-arm trial

  • ​Patients previously randomized to REXULTI continued their previous dose
  • ​Patients previously randomized to placebo were initiated on REXULTI
  • ​Dosing was concealed to maintain blinding of the placebo-controlled trial; dose adjustments were permitted

Study Limitations2

  • ​The extension study did not include a control group and was a nonrandomized, single-group assignment
  • Sample size was not based on statistical power considerations
  • The trial population was derived from eligible patients who rolled over from Study 7

Long-term extension study design2

Study design

Safety study Safety study, graph
Safety study Safety study, graph
  • All patients were on REXULTI at Week 12; there was no placebo treatment arm during the extension study period

Baseline characteristics2,e

Extension study Extension study, graph
Extension study Extension study, graph

eBaseline is the Week 12 visit of the placebo-controlled trial.     
BMI, body mass index; CMAI, Cohen-Mansfield Agitation Inventory; MMSE, Mini-Mental State Examination; SD, standard deviation.

Adverse reactions in ≥2% of patients treated with REXULTI1,2

Safety adverse reactions Safety adverse reactions, stats
Safety adverse reactions Safety adverse reactions, stats
  • In the 12-week extension study of REXULTI, 1% of patients had EPS-related adverse reactions (excluding akathisia) reported, and 0% of patients had akathisia reported2
  • Similar discontinuation rates due to adverse reactions were observed in Study 7 and the 12-week extension trial; twelve patients (4.6%) discontinued due to TEAEs2
  • 1 (0.6%) discontinuation to somnolence; 0 discontinuations due to sedation1

 fSomnolence and sedation are grouped to somnolence adverse reactions in the Prescribing Information.
EPS, extrapyramidal symptoms; TEAE, treatment-emergent adverse event.

Exploratory analysis of CMAI total score2

Efficacy of REXULTI in the extension study was an exploratory endpoint2

Study 7 and Extension study Study 7 and Extension study, graph
Study 7 and Extension study Study 7 and Extension study, graph

​An exploratory analysis examined the change from Week 12 to Week 24 in CMAI total score

Mean (SD) CMAI total score continued to improve in the extension trial, from 59.4 (17.7) points at Week 12 to 50.9 (15.0) points at Week 24, a mean (SD) change of -9.1 (13.5) points. Mean (SD) improvement from Week 12 to Week 24 was greater in the prior placebo subgroup (from 63.0 [18.1] to 51.6 [14.4], a change of -12.5 [14.6] points) than in the prior brexpiprazole subgroup (from 57.3 [17.2] to 50.4 [15.4], a change of -7.1 [12.3] points). By Week 24, mean CMAI total scores were similar in both subgroups.

CMAI, Cohen-Mansfield Agitation Inventory; LS, least squares; SD, standard deviation.

References: 1. Data on file (REX-655). 2. Behl S, Slomkowski M, Chen D, et al. Brexpiprazole for the treatment of agitation associated with dementia due to Alzheimer’s disease: a 12-week, active-treatment, extension trial. J Alzheimers Dis. 2024;102(2):520–529.

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Full Prescribing Information

All rights reserved.

February 2026
11US25EBP0359
ISI Block Title

INDICATIONS and IMPORTANT SAFETY INFORMATION for REXULTI® (brexpiprazole)

INDICATIONS

REXULTI is indicated for:

  • Use as an adjunctive therapy to antidepressants for the treatment of major depressive disorder (MDD) in adults
  • Treatment of schizophrenia in adults and pediatric patients ages 13 years and older
  • Treatment of agitation associated with dementia due to Alzheimer’s disease

Limitations of Use: REXULTI is not indicated as an as needed (“prn”) treatment for agitation associated with dementia due to Alzheimer’s disease.

IMPORTANT SAFETY INFORMATION

WARNING: INCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS

Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at increased risk of death. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer’s disease.

WARNING: SUICIDAL THOUGHTS AND BEHAVIORS

Antidepressants increased the risk of suicidal thoughts and behaviors in pediatric patients and young adult patients. Closely monitor all antidepressant-treated patients for clinical worsening and emergence of suicidal thoughts and behaviors. The safety and effectiveness of REXULTI have not been established in pediatric patients with MDD.

Contraindication: In patients with known hypersensitivity to brexpiprazole or any of its components. Reactions have included: rash, facial swelling, urticaria, and anaphylaxis.

Cerebrovascular Adverse Events, Including Stroke: In clinical trials, elderly patients with dementia randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer’s disease.

Neuroleptic Malignant Syndrome (NMS): NMS is a potentially fatal symptom complex reported in association with administration of antipsychotic drugs, including REXULTI. Clinical signs of NMS are hyperpyrexia, muscle rigidity, altered mental status, and evidence of autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis, and cardiac dysrhythmia). Additional signs may include elevated creatinine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. Manage NMS with immediate discontinuation of REXULTI, intensive symptomatic treatment, and monitoring.

Tardive Dyskinesia (TD): Risk of TD, and the potential to become irreversible, appear to increase with duration of treatment and total cumulative dose of antipsychotic drugs. TD can develop after relatively brief treatment periods, at low doses, or after discontinuation of treatment. For chronic treatment, use the lowest dose and shortest duration of REXULTI needed to produce a clinical response. If signs and symptoms of TD appear, drug discontinuation should be considered.

Metabolic Changes: Atypical antipsychotic drugs, including REXULTI, have caused metabolic changes including:

  • Hyperglycemia/Diabetes Mellitus: Hyperglycemia and diabetes mellitus, in some cases extreme and associated with diabetic ketoacidosis, hyperosmolar coma, or death, have been reported in patients treated with atypical antipsychotics. Assess fasting plasma glucose before or soon after initiation of antipsychotic medication and monitor periodically during long-term treatment.
  • Dyslipidemia: Atypical antipsychotics cause adverse alterations in lipids. Before or soon after initiation of antipsychotic medication, obtain a fasting lipid profile at baseline and monitor periodically during treatment.
  • Weight Gain: Weight gain has been observed in patients treated with REXULTI. Monitor weight at baseline and frequently thereafter.

Pathological Gambling and Other Compulsive Behaviors: Intense urges, particularly for gambling, and the inability to control these urges have been reported while taking REXULTI. Other compulsive urges have been reported less frequently. Prescribers should ask patients or their caregivers about the development of new or intense compulsive urges. Consider dose reduction or stopping REXULTI if such urges develop.

Leukopenia, Neutropenia, and Agranulocytosis: Leukopenia and neutropenia have been reported with antipsychotics. Agranulocytosis (including fatal cases) has been reported with other agents in this class. Monitor complete blood count in patients with pre-existing low white blood cell count (WBC)/absolute neutrophil count or history of drug-induced leukopenia/neutropenia. Discontinue REXULTI at the first sign of a clinically significant decline in WBC and in patients with severe neutropenia.

Orthostatic Hypotension and Syncope: Atypical antipsychotics cause orthostatic hypotension and syncope. Generally, the risk is greatest during initial dose titration and when increasing the dose. Monitor in patients vulnerable to hypotension and those with cardiovascular and cerebrovascular diseases.

Falls: Antipsychotics may cause somnolence, postural hypotension, and motor and sensory instability, which may lead to falls causing fractures or other injuries. For patients with diseases, conditions, or medications that could exacerbate these effects, complete fall risk assessments when initiating treatment and recurrently during treatment.

Seizures: REXULTI may cause seizures and should be used with caution in patients with a history of seizures or with conditions that lower the seizure threshold.

Body Temperature Dysregulation: Use REXULTI with caution in patients who may experience conditions that increase body temperature (eg, strenuous exercise, extreme heat, dehydration, or concomitant use with anticholinergics).

Dysphagia: Esophageal dysmotility and aspiration have been associated with antipsychotics, including REXULTI, and should be used with caution in patients at risk for aspiration.

Potential for Cognitive and Motor Impairment: REXULTI may cause somnolence and has the potential to impair judgment, thinking, or motor skills. Patients should be cautioned about operating hazardous machinery, including operating motor vehicles, until they are reasonably certain REXULTI does not affect them adversely.

Concomitant Medication: Dosage adjustments are recommended in patients who are known cytochrome P450 (CYP) 2D6 poor metabolizers and in patients taking concomitant CYP3A4 inhibitors or CYP2D6 inhibitors or strong CYP3A4 inducers.

Most commonly observed adverse reactions: In clinical trials, the most common adverse reactions were:

  • Major Depressive Disorder (MDD) in adults (adjunctive treatment to antidepressant therapy; ≥5% incidence and at least twice the rate of placebo for REXULTI vs placebo): weight increased, somnolence, and akathisia.
  • Schizophrenia in adults (≥5% incidence): weight increased, akathisia, headache, somnolence, and insomnia.
  • Schizophrenia in pediatric patients (≥5% incidence): weight increased, somnolence, headache, akathisia, and nasopharyngitis.
  • Agitation associated with dementia due to Alzheimer’s disease in adults (≥4% incidence and at least twice the rate of placebo for REXULTI vs placebo): nasopharyngitis and dizziness.

Dystonia: Symptoms of dystonia may occur in susceptible individuals during the first days of treatment and at low doses.

Pregnancy: Adequate and well-controlled studies to assess the risks of REXULTI during pregnancy have not been conducted. REXULTI should be used during pregnancy only if the benefit justifies the risk to the fetus.

Lactation: It is not known if REXULTI is excreted in human breast milk. A decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

To report SUSPECTED ADVERSE
REACTIONS, contact Otsuka America Pharmaceutical, Inc. at 1-800-438-9927 or FDA at 1-800-FDA-1088 (www.fda.gov/medwatch).

To report SUSPECTED ADVERSE REACTIONS, contact Otsuka America Pharmaceutical, Inc. at 1-800-438-9927 or FDA at 1-800-FDA-1088 (www.fda.gov/medwatch).

Please see FULL PRESCRIBING INFORMATION, including BOXED WARNING.

IMPORTANT SAFETY INFORMATION
and INDICATIONS

 
  • Use as an adjunctive therapy to antidepressants for the treatment of major depressive disorder (MDD) in adults
  • Treatment of schizophrenia in adults and pediatric patients ages 13 years and older
  • Treatment of agitation associated with Alzheimer’s dementia (AAD)
ISI Block Title

WARNING: INCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS

Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at increased risk of death. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer’s disease.

WARNING: SUICIDAL THOUGHTS AND BEHAVIORS

Antidepressants increased the risk of suicidal thoughts and behaviors in pediatric patients and young adult patients. Closely monitor all antidepressant-treated patients for clinical worsening and emergence of suicidal thoughts and behaviors. The safety and effectiveness of REXULTI have not been established in pediatric patients with MDD.

Contraindication: In patients with known hypersensitivity to brexpiprazole or any of its components. Reactions have included: rash, facial swelling, urticaria, and anaphylaxis.

Cerebrovascular Adverse Events, Including Stroke: In clinical trials, elderly patients with dementia randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer’s disease.

Neuroleptic Malignant Syndrome (NMS): NMS is a potentially fatal symptom complex reported in association with administration of antipsychotic drugs, including REXULTI. Clinical signs of NMS are hyperpyrexia, muscle rigidity, altered mental status, and evidence of autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis, and cardiac dysrhythmia). Additional signs may include elevated creatinine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. Manage NMS with immediate discontinuation of REXULTI, intensive symptomatic treatment, and monitoring.

Tardive Dyskinesia (TD): Risk of TD, and the potential to become irreversible, appear to increase with duration of treatment and total cumulative dose of antipsychotic drugs. TD can develop after relatively brief treatment periods, at low doses, or after discontinuation of treatment. For chronic treatment, use the lowest dose and shortest duration of REXULTI needed to produce a clinical response. If signs and symptoms of TD appear, drug discontinuation should be considered.

Metabolic Changes: Atypical antipsychotic drugs, including REXULTI, have caused metabolic changes including:

  • Hyperglycemia/Diabetes Mellitus: Hyperglycemia and diabetes mellitus, in some cases extreme and associated with diabetic ketoacidosis, hyperosmolar coma, or death, have been reported in patients treated with atypical antipsychotics. Assess fasting plasma glucose before or soon after initiation of antipsychotic medication and monitor periodically during long-term treatment.
  • Dyslipidemia: Atypical antipsychotics cause adverse alterations in lipids. Before or soon after initiation of antipsychotic medication, obtain a fasting lipid profile at baseline and monitor periodically during treatment.
  • Weight Gain: Weight gain has been observed in patients treated with REXULTI. Monitor weight at baseline and frequently thereafter.

Pathological Gambling and Other Compulsive Behaviors: Intense urges, particularly for gambling, and the inability to control these urges have been reported while taking REXULTI. Other compulsive urges have been reported less frequently. Prescribers should ask patients or their caregivers about the development of new or intense compulsive urges. Consider dose reduction or stopping REXULTI if such urges develop.

Leukopenia, Neutropenia, and Agranulocytosis: Leukopenia and neutropenia have been reported with antipsychotics. Agranulocytosis (including fatal cases) has been reported with other agents in this class. Monitor complete blood count in patients with pre-existing low white blood cell count (WBC)/absolute neutrophil count or history of drug-induced leukopenia/neutropenia. Discontinue REXULTI at the first sign of a clinically significant decline in WBC and in patients with severe neutropenia.

Orthostatic Hypotension and Syncope: Atypical antipsychotics cause orthostatic hypotension and syncope. Generally, the risk is greatest during initial dose titration and when increasing the dose. Monitor in patients vulnerable to hypotension and those with cardiovascular and cerebrovascular diseases.

Falls: Antipsychotics may cause somnolence, postural hypotension, and motor and sensory instability, which may lead to falls causing fractures or other injuries. For patients with diseases, conditions, or medications that could exacerbate these effects, complete fall risk assessments when initiating treatment and recurrently during treatment.

Seizures: REXULTI may cause seizures and should be used with caution in patients with a history of seizures or with conditions that lower the seizure threshold.

Body Temperature Dysregulation: Use REXULTI with caution in patients who may experience conditions that increase body temperature (eg, strenuous exercise, extreme heat, dehydration, or concomitant use with anticholinergics).

Dysphagia: Esophageal dysmotility and aspiration have been associated with antipsychotics, including REXULTI, and should be used with caution in patients at risk for aspiration.

Potential for Cognitive and Motor Impairment: REXULTI may cause somnolence and has the potential to impair judgment, thinking, or motor skills. Patients should be cautioned about operating hazardous machinery, including operating motor vehicles, until they are reasonably certain REXULTI does not affect them adversely.

Concomitant Medication: Dosage adjustments are recommended in patients who are known cytochrome P450 (CYP) 2D6 poor metabolizers and in patients taking concomitant CYP3A4 inhibitors or CYP2D6 inhibitors or strong CYP3A4 inducers.

Most commonly observed adverse reactions: In clinical trials, the most common adverse reactions were:

  • Major Depressive Disorder (MDD) in adults (adjunctive treatment to antidepressant therapy; ≥5% incidence and at least twice the rate of placebo for REXULTI vs placebo): weight increased, somnolence, and akathisia.
  • Schizophrenia in adults (≥5% incidence): weight increased, akathisia, headache, somnolence, and insomnia.
  • Schizophrenia in pediatric patients (≥5% incidence): weight increased, somnolence, headache, akathisia, and nasopharyngitis.
  • Agitation associated with dementia due to Alzheimer’s disease in adults (≥4% incidence and at least twice the rate of placebo for REXULTI vs placebo): nasopharyngitis and dizziness.

Dystonia: Symptoms of dystonia may occur in susceptible individuals during the first days of treatment and at low doses.

Pregnancy: Adequate and well-controlled studies to assess the risks of REXULTI during pregnancy have not been conducted. REXULTI should be used during pregnancy only if the benefit justifies the risk to the fetus.

Lactation: It is not known if REXULTI is excreted in human breast milk. A decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

To report SUSPECTED ADVERSE REACTIONS, contact Otsuka America Pharmaceutical, Inc. at 1-800-438-9927 or FDA at 1-800-FDA-1088 (www.fda.gov/medwatch).

INDICATIONS

REXULTI is indicated for:

  • Use as an adjunctive therapy to antidepressants for the treatment of major depressive disorder (MDD) in adults
  • Treatment of schizophrenia in adults and pediatric patients ages 13 years and older
  • Treatment of agitation associated with dementia due to Alzheimer’s disease

Limitations of Use: REXULTI is not indicated as an as needed (“prn”) treatment for agitation associated with dementia due to Alzheimer’s disease.

Please see FULL PRESCRIBING INFORMATION, including BOXED WARNING.

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