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Brexpiprazole: Drug information

Brexpiprazole: Drug information
(For additional information see "Brexpiprazole: Patient drug information" and see "Brexpiprazole: Pediatric drug information")

For abbreviations, symbols, and age group definitions used in Lexicomp (show table)
ALERT: US Boxed Warning
Increased mortality in elderly patients with dementia-related psychosis:

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

Suicidal thoughts and behaviors:

Antidepressants increased the risk of suicidal thoughts and behavior in patients aged 24 years and younger in short-term studies. Monitor closely for clinical worsening and for emergence of suicidal thoughts and behaviors. The safety and efficacy of brexpiprazole have not been established in pediatric patients with major depressive disorder.

Brand Names: US
  • Rexulti
Brand Names: Canada
  • Rexulti
Pharmacologic Category
  • Second Generation (Atypical) Antipsychotic
Dosing: Adult
Agitation associated with dementia due to Alzheimer disease

Agitation associated with dementia due to Alzheimer disease:

Note: Antipsychotics are recommended for short-term adjunctive use in patients with dementia while addressing underlying cause(s) of severe symptoms. In patients without a clinically significant response after an adequate trial (eg, up to 4 weeks), taper and withdraw therapy. Only continue in patients with demonstrated benefit; attempt to taper and withdraw at regular intervals (eg, within 4 months of initiation). Patients with dementia with Lewy bodies are at increased risk for severe adverse reactions with antipsychotics; if used off label, caution is required even with low doses (Ref).

Oral: Initial: 0.5 mg once daily for 7 days, increase dose on days 8 to 14 to 1 mg once daily, then on day 15 to the target dose of 2 mg once daily. Based on response and tolerability, may increase dose after at least 14 days to the maximum dose of 3 mg once daily.

Major depressive disorder

Major depressive disorder (unipolar) (adjunct to antidepressants): Oral: Initial: 0.5 mg or 1 mg once daily; titrate at weekly intervals based on response and tolerability to 1 mg once daily (if initial dose is 0.5 mg), followed by an increase to the target dose of 2 mg once daily; maximum daily dose: 3 mg.

Schizophrenia

Schizophrenia: Oral: Initial: 1 mg once daily for 4 days, titrate based on response and tolerability to 2 mg once daily for 3 days, followed by 4 mg once daily on day 8; target dose: 2 to 4 mg/day; maximum daily dose: 4 mg.

Dosage adjustment for CYP2D6 poor metabolizers: Administer 1/2 of the usual dose; in patients also taking moderate/strong CYP3A4 inhibitors, administer 1/4 of the usual dose.

Dosage adjustment with concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.

Discontinuation of therapy: In the treatment of chronic psychiatric disease, switching therapy rather than discontinuation is generally advised if side effects are intolerable or treatment is not effective. If patient insists on stopping treatment, gradual dose reduction (ie, over several weeks to months) is advised to detect a re-emergence of symptoms and to avoid withdrawal reactions (eg, agitation, alternating feelings of warmth and chill, anxiety, diaphoresis, dyskinesias, GI symptoms, insomnia, irritability, myalgia, paresthesia, psychosis, restlessness, rhinorrhea, tremor, vertigo) unless discontinuation is due to significant adverse effects. Monitor closely to allow for detection of prodromal symptoms of disease recurrence (Ref).

Switching antipsychotics: An optimal universal strategy for switching antipsychotic drugs has not been established. Strategies include: cross-titration (gradually discontinuing the first antipsychotic while gradually increasing the new antipsychotic) and abrupt change (abruptly discontinuing the first antipsychotic and either increasing the new antipsychotic gradually or starting it at a treatment dose). In patients with schizophrenia at high risk of relapse, the current medication may be maintained at full dose as the new medication is increased (ie, overlap); once the new medication is at therapeutic dose, the first medication is gradually decreased and discontinued over 1 to 2 weeks (Ref). Based upon clinical experience, some experts generally prefer cross-titration and overlap approaches rather than abrupt change (Ref).

Dosing: Kidney Impairment: Adult

CrCl ≥60 mL/minute: No dosage adjustment necessary.

CrCl <60 mL/minute: Maximum dose:

Agitation associated with dementia due to Alzheimer disease: 2 mg once daily.

Major depressive disorder: 2 mg once daily.

Schizophrenia: 3 mg once daily.

Hemodialysis: There are no dosage adjustments provided in the manufacturer’s labeling (has not been studied); however, removal by dialysis unlikely since brexpiprazole is highly protein bound.

Dosing: Hepatic Impairment: Adult

Mild impairment (Child-Pugh class A): There are no dosage adjustments provided in the manufacturer’s labeling.

Moderate to severe impairment (Child-Pugh class B or C): Maximum dose:

Agitation associated with dementia due to Alzheimer disease: 2 mg once daily.

Major depressive disorder: 2 mg once daily.

Schizophrenia: 3 mg once daily.

Dosing: Older Adult

Note: Avoid for behavioral problems associated with dementia or delirium unless alternative nonpharmacologic therapies have failed and patient may harm self or others. May be appropriate for labeled indications, including schizophrenia (Ref).

Refer to adult dosing; consider initiating therapy at the low end of the dosing range. Dosages in the lower range of recommended adult dosing are generally sufficient with late-onset schizophrenia or psychosis. Titrate dosage slowly and monitor carefully (Ref).

Dosing: Pediatric

(For additional information see "Brexpiprazole: Pediatric drug information")

Schizophrenia

Schizophrenia:

Adolescents <18 years: Oral: Initial: 0.5 mg once daily for 4 days (days 1 to 4); titrate to 1 mg once daily for 3 days (days 5 to 7), followed by 2 mg once daily on day 8 based on response and tolerability; target dose range: 2 to 4 mg once daily; maximum daily dose: 4 mg/day.

Adolescents ≥18 years: Oral: Initial: 1 mg once daily for 4 days (days 1 to 4); titrate to 2 mg once daily for 3 days (days 5 to 7), followed by 4 mg once daily on day 8 based on response and tolerability; target dose range: 2 to 4 mg once daily; maximum daily dose: 4 mg/day.

Discontinuation of therapy: Adolescents: American Academy of Child and Adolescent Psychiatry (AACAP), American Psychiatric Association (APA), Canadian Psychiatric Association (CPA), National Institute for Health and Care Excellence (NICE), and World Federation of Societies of Biological Psychiatry (WFSBP) guidelines recommend gradually tapering antipsychotics to avoid withdrawal symptoms and minimize the risk of relapse (Ref); risk for withdrawal symptoms may be highest with highly anticholinergic or dopaminergic antipsychotics (Ref). When stopping antipsychotic therapy in patients with schizophrenia, the CPA guidelines recommend a gradual taper over 6 to 24 months and the APA guidelines recommend reducing the dose by 10% each month (Ref). Continuing antiparkinsonism agents for a brief period after discontinuation may prevent withdrawal symptoms (Ref). When switching antipsychotics, three strategies have been suggested: Cross titration (gradually discontinuing the first antipsychotic while gradually increasing the new antipsychotic), overlap and taper (maintaining the dose of the first antipsychotic while gradually increasing the new antipsychotic, then tapering the first antipsychotic), and abrupt change (abruptly discontinuing the first antipsychotic and either increasing the new antipsychotic gradually or starting it at a treatment dose). Evidence supporting ideal switch strategies and taper rates is limited and results are conflicting (Ref).

Dosage adjustment with concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.

Dosing: Kidney Impairment: Pediatric

Adolescents:

CrCl ≥60 mL/minute: No dosage adjustment necessary.

CrCl <60 mL/minute:

Schizophrenia: Oral: Maximum dose: 3 mg once daily.

Hemodialysis: There are no dosage adjustments provided in the manufacturer's labeling (has not been studied); however, removal by dialysis unlikely since brexpiprazole is highly protein bound.

Dosing: Hepatic Impairment: Pediatric

Adolescents:

Mild impairment: There are no dosage adjustments provided in the manufacturer's labeling.

Moderate to severe impairment:

Maximum dose: Schizophrenia: Oral: 3 mg once daily.

Adverse Reactions

The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Adverse reactions reported in adults.

>10%:

Endocrine & metabolic: Increased serum triglycerides (<500 mg/dL: 8% to 28%; ≥500 mg/dL: <1%), weight gain (≥7% increase in body weight: 2% to 11%)

Nervous system: Akathisia (1% to 14%)

1% to 10%:

Dermatologic: Hyperhidrosis (≥1%)

Endocrine & metabolic: Decreased cortisol (3% to 4%), increased serum prolactin (≥1%)

Gastrointestinal: Abdominal pain (≥1%), constipation (2% to 3%), diarrhea (3%), dyspepsia (3% to 6%), flatulence (≥1%), increased appetite (3%), nausea (≥1%), sialorrhea (≥1%), xerostomia (≥1%)

Genitourinary: Urinary tract infection (3%)

Nervous system: Abnormal dreams (≥1%), anxiety (2% to 4%), dizziness (2% to 5%), drowsiness (3% to 6%), extrapyramidal reaction (3% to 6%), fatigue (3% to 5%), headache (9%), insomnia (5%), restlessness (2% to 4%), sedated state (2% to 3%), tremor (2% to 5%)

Neuromuscular & skeletal: Increased creatine phosphokinase in blood specimen (2% to 4%), myalgia (≥1%)

Ophthalmic: Blurred vision (≥1%)

Respiratory: Nasopharyngitis (3% to 7%)

<1%: Cardiovascular: Orthostatic hypotension, syncope

Frequency not defined: Nervous system: Suicidal ideation, suicidal tendencies

Postmarketing:

Endocrine & metabolic: Diabetes mellitus, dyslipidemia, hyperglycemia

Nervous system: Impulse control disorder (including pathological gambling, increased libido, shopping, eating), neuroleptic malignant syndrome

Contraindications

Hypersensitivity (eg, anaphylaxis, facial swelling, rash, urticaria) to brexpiprazole or any component of the formulation

Warnings/Precautions

Concerns related to adverse reactions:

• Blood dyscrasias: Leukopenia, neutropenia, and agranulocytosis (sometimes fatal) have been reported in clinical trials and postmarketing reports with antipsychotic use; presence of risk factors (eg, preexisting low WBC/ANC or history of drug-induced leuko-/neutropenia) should prompt periodic blood count assessment. Discontinue therapy at first signs of blood dyscrasias or if absolute neutrophil count <1,000/mm3.

• Cerebrovascular effects: An increased incidence of cerebrovascular effects (eg, transient ischemic attack, stroke), including fatalities, has been reported in placebo-controlled trials of antipsychotics for the unapproved use in elderly patients with dementia-related psychosis.

• CNS depression: May cause CNS depression, which may impair physical or mental abilities; patients must be cautioned about performing tasks that require mental alertness (eg, operating machinery, driving).

• Dyslipidemia: Has been reported with atypical antipsychotics; risk profile may differ between agents. In clinical trials, the incidence of hypertriglyceridemia observed with brexpiprazole was greater than observed with placebo, while changes in fasting total cholesterol, LDL, and HDL were similar.

• Esophageal dysmotility/aspiration: Antipsychotic use has been associated with esophageal dysmotility and aspiration; risk increases with age. Use with caution in patients at risk for aspiration pneumonia (eg, Alzheimer disease), particularly in patients >75 years (Herzig 2017; Maddalena 2004).

• Extrapyramidal symptoms: May cause extrapyramidal symptoms (EPS), including pseudoparkinsonism, acute dystonic reactions, akathisia, and tardive dyskinesia (risk of these reactions is generally much lower relative to typical/conventional antipsychotics; frequencies reported are similar to placebo). Risk of dystonia (and probably other EPS) may be greater with increased doses, use of conventional antipsychotics, males, and younger patients. Factors associated with greater vulnerability to tardive dyskinesia include older in age, female gender combined with postmenopausal status, Parkinson disease, pseudoparkinsonism symptoms, affective disorders (particularly major depressive disorder), concurrent medical diseases such as diabetes, previous brain damage, alcoholism, poor treatment response, and use of high doses of antipsychotics (APA [Keepers 2020]; Soares-Weiser 2007). Consider therapy discontinuation with signs/symptoms of tardive dyskinesia.

• Falls: May increase the risk for falls due to somnolence, orthostatic hypotension, and motor or sensory instability.

• Hyperglycemia: Atypical antipsychotics have been associated with development of hyperglycemia; in some cases, may be extreme and associated with ketoacidosis, hyperosmolar coma, or death. All patients should be monitored for symptoms of hyperglycemia (eg, polydipsia, polyuria, polyphagia, weakness). Use with caution in patients with diabetes or other disorders of glucose regulation; monitor for worsening of glucose control. Patients with risk factors for diabetes (eg, obesity or family history) should have a baseline fasting blood sugar (FBS) and periodic assessment of glucose regulation. Hyperglycemia may resolve with discontinuation of antipsychotic; some patients may require treatment of diabetes after discontinuation of therapy.

• Impulse control disorders: Has been associated with compulsive behaviors and/or loss of impulse control, which has manifested as pathological gambling, uncontrolled sexual urges, uncontrolled spending, binge or compulsive eating, and/or other intense urges. Patients with prior history of impulse control issues may be at increased risk. Dose reduction or discontinuation of therapy has been reported to reverse these behaviors in most, but not all, cases.

• Neuroleptic malignant syndrome: Neuroleptic malignant syndrome (NMS) has been associated with use of antipsychotic agents, including brexpiprazole; monitor for mental status changes, fever, muscle rigidity and/or autonomic instability, elevated creatinine phosphokinase, rhabdomyolysis, and/or acute renal failure. Discontinue treatment immediately if NMS is suspected and initiate symptomatic treatment and monitoring.

• Orthostatic hypotension: May cause orthostatic hypotension; increased risk at initiation of therapy or during dose escalation. Use with caution in patients at risk of this effect or in those who would not tolerate transient hypotensive episodes (patients who are antipsychotic-naive or have cerebrovascular disease, cardiovascular disease, hypovolemia, dehydration, or are taking concurrent medication use which may predispose to hypotension/bradycardia). Consider using lower starting dosages and slower titrations in these patients.

• Temperature regulation: Antipsychotic use has been associated with impaired core body temperature regulation; caution with strenuous exercise, heat exposure, dehydration, and concomitant medication possessing anticholinergic effects.

• Weight gain: Significant weight gain has been observed with antipsychotic therapy; incidence varies with product. Monitoring of weight is recommended.

Disease-related concerns:

• Dementia: Most deaths in elderly patients with dementia-related psychosis treated with antipsychotics appeared to be either cardiovascular (eg, heart failure, sudden death) or infectious (eg, pneumonia) in nature. Use with caution in patients with Lewy body dementia or Parkinson disease dementia due to greater risk of adverse effects, increased sensitivity to extrapyramidal effects, and association with irreversible cognitive decompensation or death. (APA [Reus 2016]).

• Renal impairment: Use with caution in patients with renal impairment; dosage adjustment needed if CrCl <60 mL/minute.

• Seizures: Use with caution in patients at risk of seizures or with conditions that potentially lower the seizure threshold. Elderly patients may be at increased risk of seizures due to an increased prevalence of predisposing factors.

Dosage form specific issues:

• Lactose: Tablets may contain lactose; avoid use in patients with galactose intolerance or glucose-galactose malabsorption.

Other warnings/precautions:

• Discontinuation of therapy: When discontinuing antipsychotic therapy, gradually taper antipsychotics to avoid physical withdrawal symptoms and rebound symptoms (APA [Keepers 2020]; WFSBP [Hasan 2012]). Withdrawal symptoms may include agitation, alternate feelings of warmth and cold, anxiety, diaphoresis, dyskinesia, GI symptoms, insomnia, irritability, myalgia, paresthesia, psychosis, restlessness, rhinorrhea, tremor, and vertigo (Lambert 2007; Moncrieff 2020). The risk of withdrawal symptoms is highest following abrupt discontinuation of highly anticholinergic or dopaminergic antipsychotics (Cerovecki 2013). Patients with chronic symptoms, repeated relapses, and clear diagnostic features of schizophrenia are at risk for poor outcomes if medications are discontinued (APA [Keepers 2020]).

Dosage Forms: US

Excipient information presented when available (limited, particularly for generics); consult specific product labeling.

Tablet, Oral:

Rexulti: 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg [contains corn starch]

Generic Equivalent Available: US

No

Pricing: US

Tablets (Rexulti Oral)

0.25 mg (per each): $58.86

0.5 mg (per each): $58.86

1 mg (per each): $58.86

2 mg (per each): $58.86

3 mg (per each): $58.86

4 mg (per each): $58.86

Disclaimer: A representative AWP (Average Wholesale Price) price or price range is provided as reference price only. A range is provided when more than one manufacturer's AWP price is available and uses the low and high price reported by the manufacturers to determine the range. The pricing data should be used for benchmarking purposes only, and as such should not be used alone to set or adjudicate any prices for reimbursement or purchasing functions or considered to be an exact price for a single product and/or manufacturer. Medi-Span expressly disclaims all warranties of any kind or nature, whether express or implied, and assumes no liability with respect to accuracy of price or price range data published in its solutions. In no event shall Medi-Span be liable for special, indirect, incidental, or consequential damages arising from use of price or price range data. Pricing data is updated monthly.

Dosage Forms: Canada

Excipient information presented when available (limited, particularly for generics); consult specific product labeling. [DSC] = Discontinued product

Tablet, Oral:

Rexulti: 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg [contains corn starch]

Tablet Therapy Pack, Oral:

Rexulti: 0.5 & 1 MG ([DSC]) [contains corn starch]

Administration: Adult

Oral: Administer with or without food.

Administration: Pediatric

Oral: Administer with or without food.

Medication Guide and/or Vaccine Information Statement (VIS)

An FDA-approved patient medication guide, which is available with the product information and as follows, must be dispensed with this medication:

Rexulti: https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/205422s009lbl.pdf#page=36

Use: Labeled Indications

Agitation associated with dementia due to Alzheimer disease: Treatment of agitation associated with dementia due to Alzheimer disease.

Limitations of use: Brexpiprazole is not indicated as an as-needed ("prn") treatment.

Major depressive disorder (unipolar): Adjunctive treatment in adults for the treatment of major depressive disorder.

Schizophrenia: Treatment of schizophrenia in pediatric patients ≥13 years of age and adults.

Medication Safety Issues
Older Adult: High-Risk Medication:

Beers Criteria: Antipsychotics are identified in the Beers Criteria as potentially inappropriate medications to be avoided in patients 65 years and older due to an increased risk of stroke and a greater rate of cognitive decline and mortality in patients with dementia. Evidence also suggests there may be an increased risk of mortality with use independent of dementia. Avoid antipsychotics for behavioral problems associated with dementia or delirium unless alternative nonpharmacologic therapies have failed and patient may harm self or others. In addition, antipsychotics should be used with caution in the elderly due to their potential to cause or exacerbate syndrome of inappropriate antidiuretic hormone secretion (SIADH) or hyponatremia; monitor sodium closely with initiation or dosage adjustments in older adults. Use may be appropriate for labeled indications, including schizophrenia, bipolar disorder, Parkinson disease psychosis, adjunctive therapy in major depressive disorder, or for short-term use as an antiemetic (Beers Criteria [AGS 2023]).

Metabolism/Transport Effects

Substrate of CYP2D6 (major), CYP3A4 (major); Note: Assignment of Major/Minor substrate status based on clinically relevant drug interaction potential

Drug Interactions

Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the Lexicomp drug interactions program by clicking on the “Launch drug interactions program” link above.

Agents With Seizure Threshold Lowering Potential: May enhance the adverse/toxic effect of Brexpiprazole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Ajmaline: May increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Alcohol (Ethyl): CNS Depressants may enhance the CNS depressant effect of Alcohol (Ethyl). Risk C: Monitor therapy

Alizapride: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Amifampridine: Agents With Seizure Threshold Lowering Potential may enhance the neuroexcitatory and/or seizure-potentiating effect of Amifampridine. Risk C: Monitor therapy

Amisulpride (Oral): May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, the risk of neuroleptic malignant syndrome or increased QTc interval may be increased. Risk C: Monitor therapy

Amisulpride (Oral): Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Amisulpride (Oral). Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Antidiabetic Agents: Hyperglycemia-Associated Agents may diminish the therapeutic effect of Antidiabetic Agents. Risk C: Monitor therapy

Anti-Parkinson Agents (Dopamine Agonist): Antipsychotic Agents (Second Generation [Atypical]) may diminish the therapeutic effect of Anti-Parkinson Agents (Dopamine Agonist). Management: Consider avoiding atypical antipsychotic use in patients with Parkinson disease. If an atypical antipsychotic is necessary, consider using clozapine, quetiapine, or ziprasidone at lower initial doses, or a non-dopamine antagonist (eg, pimavanserin). Risk D: Consider therapy modification

ARIPiprazole: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ARIPiprazole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

ARIPiprazole Lauroxil: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ARIPiprazole Lauroxil. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Artemether and Lumefantrine: May increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Asenapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Asenapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Azelastine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Benperidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Benperidol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Blonanserin: CNS Depressants may enhance the CNS depressant effect of Blonanserin. Management: Use caution if coadministering blonanserin and CNS depressants; dose reduction of the other CNS depressant may be required. Strong CNS depressants should not be coadministered with blonanserin. Risk D: Consider therapy modification

Blood Pressure Lowering Agents: May enhance the hypotensive effect of Antipsychotic Agents (Second Generation [Atypical]). Risk C: Monitor therapy

Brexanolone: CNS Depressants may enhance the CNS depressant effect of Brexanolone. Risk C: Monitor therapy

Brimonidine (Topical): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Bromopride: May enhance the adverse/toxic effect of Antipsychotic Agents. Risk X: Avoid combination

Bromperidol: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Buprenorphine: CNS Depressants may enhance the CNS depressant effect of Buprenorphine. Management: Consider reduced doses of other CNS depressants, and avoiding such drugs in patients at high risk of buprenorphine overuse/self-injection. Initiate buprenorphine at lower doses in patients already receiving CNS depressants. Risk D: Consider therapy modification

BuPROPion: Brexpiprazole may enhance the adverse/toxic effect of BuPROPion. Specifically, the risk for seizures may be increased. BuPROPion may increase the serum concentration of Brexpiprazole. Management: Reduce brexpiprazole dose to 50% of usual dose with bupropion; reduce to 25% of usual if used with both bupropion and a strong or moderate CYP3A4 inhibitor. These recommendations do not apply if treating major depressive disorder. Monitor for seizures. Risk D: Consider therapy modification

Cabergoline: May diminish the therapeutic effect of Antipsychotic Agents. Risk X: Avoid combination

Cannabinoid-Containing Products: CNS Depressants may enhance the CNS depressant effect of Cannabinoid-Containing Products. Risk C: Monitor therapy

Cariprazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Cariprazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Chlormethiazole: May enhance the CNS depressant effect of CNS Depressants. Management: Monitor closely for evidence of excessive CNS depression. The chlormethiazole labeling states that an appropriately reduced dose should be used if such a combination must be used. Risk D: Consider therapy modification

Chlorphenesin Carbamate: May enhance the adverse/toxic effect of CNS Depressants. Risk C: Monitor therapy

ChlorproMAZINE: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ChlorproMAZINE. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Clofazimine: May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Clothiapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Clothiapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

CloZAPine: May enhance the adverse/toxic effect of Brexpiprazole. Specifically, the risk of seizures may be increased. Brexpiprazole may decrease the serum concentration of CloZAPine. Risk C: Monitor therapy

CNS Depressants: May enhance the adverse/toxic effect of other CNS Depressants. Risk C: Monitor therapy

CYP2D6 Inhibitors (Moderate): May increase the serum concentration of Brexpiprazole. Management: If brexpiprazole is to be used together with both a moderate CYP2D6 inhibitor and a strong or moderate CYP3A4 inhibitor, the brexpiprazole dose should be reduced to 25% of the usual dose when treating indications other than major depressive disorder. Risk C: Monitor therapy

CYP2D6 Inhibitors (Strong): May increase the serum concentration of Brexpiprazole. Management: Reduce brexpiprazole dose to 50% of usual with strong CYP2D6 inhibitors, reduce to 25% of usual if used with both a strong CYP2D6 inhibitor and a strong or moderate CYP3A4 inhibitor; these recommendations do not apply if treating major depressive disorder Risk D: Consider therapy modification

CYP3A4 Inducers (Moderate): May decrease the serum concentration of Brexpiprazole. Risk C: Monitor therapy

CYP3A4 Inducers (Strong): May decrease the serum concentration of Brexpiprazole. Management: If brexpiprazole is used together with a strong CYP3A4 inducer, the brexpiprazole dose should gradually be doubled over the course of 1 to 2 weeks. Decrease brexpiprazole to original dose over 1 to 2 weeks if the strong CYP3A4 inducer is discontinued. Risk D: Consider therapy modification

CYP3A4 Inhibitors (Moderate): May increase the serum concentration of Brexpiprazole. Management: The brexpiprazole dose should be reduced to 25% of usual if used together with both a moderate CYP3A4 inhibitor and a strong or moderate CYP2D6 inhibitor, or if a moderate CYP3A4 inhibitor is used in a CYP2D6 poor metabolizer. Risk C: Monitor therapy

CYP3A4 Inhibitors (Strong): May increase the serum concentration of Brexpiprazole. Management: Reduce brexpiprazole dose 50% with strong CYP3A4 inhibitors; reduce to 25% of usual if used with both a strong CYP3A4 inhibitor and a CYP2D6 inhibitor in patients not being treated for MDD, or strong CYP3A4 inhibitor used in a CYP2D6 poor metabolizer. Risk D: Consider therapy modification

Daridorexant: May enhance the CNS depressant effect of CNS Depressants. Management: Dose reduction of daridorexant and/or any other CNS depressant may be necessary. Use of daridorexant with alcohol is not recommended, and the use of daridorexant with any other drug to treat insomnia is not recommended. Risk D: Consider therapy modification

Deutetrabenazine: May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, the risk for akathisia, parkinsonism, or neuroleptic malignant syndrome may be increased. Risk C: Monitor therapy

DexmedeTOMIDine: CNS Depressants may enhance the CNS depressant effect of DexmedeTOMIDine. Management: Monitor for increased CNS depression during coadministration of dexmedetomidine and CNS depressants, and consider dose reductions of either agent to avoid excessive CNS depression. Risk D: Consider therapy modification

Difelikefalin: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Dimethindene (Topical): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Donepezil: May enhance the neurotoxic (central) effect of Antipsychotic Agents. Risk C: Monitor therapy

Doxylamine: CNS Depressants may enhance the CNS depressant effect of Doxylamine. Risk C: Monitor therapy

DroPERidol: May enhance the CNS depressant effect of CNS Depressants. Management: Consider dose reductions of droperidol or of other CNS agents (eg, opioids, barbiturates) with concomitant use. Risk D: Consider therapy modification

Esketamine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Fexinidazole: May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk X: Avoid combination

Flunarizine: CNS Depressants may enhance the CNS depressant effect of Flunarizine. Risk X: Avoid combination

Flunitrazepam: CNS Depressants may enhance the CNS depressant effect of Flunitrazepam. Management: Reduce the dose of CNS depressants when combined with flunitrazepam and monitor patients for evidence of CNS depression (eg, sedation, respiratory depression). Use non-CNS depressant alternatives when available. Risk D: Consider therapy modification

Flupentixol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Flupentixol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

FluPHENAZine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of FluPHENAZine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Fusidic Acid (Systemic): May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk X: Avoid combination

Galantamine: May enhance the neurotoxic (central) effect of Antipsychotic Agents. Risk C: Monitor therapy

Guanethidine: Antipsychotic Agents may diminish the therapeutic effect of Guanethidine. Risk C: Monitor therapy

Haloperidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Haloperidol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Huperzine A: May enhance the neurotoxic (central) effect of Antipsychotic Agents. Risk C: Monitor therapy

HydrOXYzine: May enhance the CNS depressant effect of CNS Depressants. Management: Consider a decrease in the CNS depressant dose, as appropriate, when used together with hydroxyzine. Increase monitoring of signs/symptoms of CNS depression in any patient receiving hydroxyzine together with another CNS depressant. Risk D: Consider therapy modification

Iloperidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iloperidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Iohexol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iohexol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iohexol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Iomeprol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iomeprol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iomeprol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Iopamidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iopamidol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iopamidol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Ixabepilone: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Kava Kava: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Kratom: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Lemborexant: May enhance the CNS depressant effect of CNS Depressants. Management: Dosage adjustments of lemborexant and of concomitant CNS depressants may be necessary when administered together because of potentially additive CNS depressant effects. Close monitoring for CNS depressant effects is necessary. Risk D: Consider therapy modification

Lithium: May enhance the neurotoxic effect of Antipsychotic Agents. Lithium may decrease the serum concentration of Antipsychotic Agents. Specifically noted with chlorpromazine. Risk C: Monitor therapy

Lofexidine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Loxapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Loxapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Lumateperone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Lumateperone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Lurasidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Lurasidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Magnesium Sulfate: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Mequitazine: Antipsychotic Agents may enhance the arrhythmogenic effect of Mequitazine. Management: Consider alternatives to one of these agents when possible. While this combination is not specifically contraindicated, mequitazine labeling describes this combination as discouraged. Risk D: Consider therapy modification

Methotrimeprazine: CNS Depressants may enhance the CNS depressant effect of Methotrimeprazine. Methotrimeprazine may enhance the CNS depressant effect of CNS Depressants. Management: Reduce the usual dose of CNS depressants by 50% if starting methotrimeprazine until the dose of methotrimeprazine is stable. Monitor patient closely for evidence of CNS depression. Risk D: Consider therapy modification

Metoclopramide: May enhance the adverse/toxic effect of Antipsychotic Agents. Risk X: Avoid combination

MetyroSINE: May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, the risk for extrapyramidal symptoms and excessive sedation may be increased. Risk C: Monitor therapy

Minocycline (Systemic): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Molindone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Molindone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Nabilone: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

OLANZapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of OLANZapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Olopatadine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Opioid Agonists: CNS Depressants may enhance the CNS depressant effect of Opioid Agonists. Management: Avoid concomitant use of opioid agonists and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Risk D: Consider therapy modification

Orphenadrine: CNS Depressants may enhance the CNS depressant effect of Orphenadrine. Risk X: Avoid combination

Oxomemazine: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Oxybate Salt Products: CNS Depressants may enhance the CNS depressant effect of Oxybate Salt Products. Management: Consider alternatives to this combination when possible. If combined, dose reduction or discontinuation of one or more CNS depressants (including the oxybate salt product) should be considered. Interrupt oxybate salt treatment during short-term opioid use Risk D: Consider therapy modification

OxyCODONE: CNS Depressants may enhance the CNS depressant effect of OxyCODONE. Management: Avoid concomitant use of oxycodone and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Risk D: Consider therapy modification

Paliperidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Paliperidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Paraldehyde: CNS Depressants may enhance the CNS depressant effect of Paraldehyde. Risk X: Avoid combination

Peginterferon Alfa-2b: May decrease the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Peginterferon Alfa-2b may increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Perampanel: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Periciazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Periciazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Perphenazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Perphenazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Pimozide: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Pimozide. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Pipamperone [INT]: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Pipamperone [INT]. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Piribedil: Antipsychotic Agents may diminish the therapeutic effect of Piribedil. Piribedil may diminish the therapeutic effect of Antipsychotic Agents. Management: Use of piribedil with antiemetic neuroleptics is contraindicated, and use with antipsychotic neuroleptics, except for clozapine, is not recommended. Risk X: Avoid combination

Polyethylene Glycol-Electrolyte Solution: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Polyethylene Glycol-Electrolyte Solution. Specifically, the risk of seizure may be increased. Risk C: Monitor therapy

Procarbazine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Prochlorperazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Prochlorperazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Promazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Promazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

QUEtiapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of QUEtiapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Quinagolide: Antipsychotic Agents may diminish the therapeutic effect of Quinagolide. Risk C: Monitor therapy

RisperiDONE: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of RisperiDONE. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Rivastigmine: May enhance the neurotoxic (central) effect of Antipsychotic Agents. Risk C: Monitor therapy

Ropeginterferon Alfa-2b: CNS Depressants may enhance the adverse/toxic effect of Ropeginterferon Alfa-2b. Specifically, the risk of neuropsychiatric adverse effects may be increased. Management: Avoid coadministration of ropeginterferon alfa-2b and other CNS depressants. If this combination cannot be avoided, monitor patients for neuropsychiatric adverse effects (eg, depression, suicidal ideation, aggression, mania). Risk D: Consider therapy modification

Rufinamide: May enhance the adverse/toxic effect of CNS Depressants. Specifically, sleepiness and dizziness may be enhanced. Risk C: Monitor therapy

Serotonergic Agents (High Risk): May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, serotonergic agents may enhance dopamine blockade, possibly increasing the risk for neuroleptic malignant syndrome. Antipsychotic Agents may enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Risk C: Monitor therapy

Sertindole: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sertindole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Sodium Phosphates: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sodium Phosphates. Specifically, the risk of seizure or loss of consciousness may be increased in patients with significant sodium phosphate-induced fluid or electrolyte abnormalities. Risk C: Monitor therapy

St John's Wort: May decrease the serum concentration of Brexpiprazole. Management: If brexpiprazole is used together with St John's wort, the brexpiprazole dose should gradually be doubled over the course of 1 to 2 weeks. Decrease brexpiprazole to original dose over 1 to 2 weeks if St John's wort is discontinued. Risk D: Consider therapy modification

Sulpiride: Antipsychotic Agents may enhance the adverse/toxic effect of Sulpiride. Risk X: Avoid combination

Suvorexant: CNS Depressants may enhance the CNS depressant effect of Suvorexant. Management: Dose reduction of suvorexant and/or any other CNS depressant may be necessary. Use of suvorexant with alcohol is not recommended, and the use of suvorexant with any other drug to treat insomnia is not recommended. Risk D: Consider therapy modification

Tetrabenazine: May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, the risk for NMS and extrapyramidal symptoms may be increased. Risk C: Monitor therapy

Thalidomide: CNS Depressants may enhance the CNS depressant effect of Thalidomide. Risk X: Avoid combination

Thioridazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Thioridazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Thiothixene: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Thiothixene. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Trifluoperazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Trifluoperazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Trimeprazine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Valerian: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Ziprasidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Ziprasidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Zolpidem: CNS Depressants may enhance the CNS depressant effect of Zolpidem. Management: Reduce the Intermezzo brand sublingual zolpidem adult dose to 1.75 mg for men who are also receiving other CNS depressants. No such dose change is recommended for women. Avoid use with other CNS depressants at bedtime; avoid use with alcohol. Risk D: Consider therapy modification

Zuclopenthixol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Zuclopenthixol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy

Zuranolone: May enhance the CNS depressant effect of CNS Depressants. Management: Consider alternatives to the use of zuranolone with other CNS depressants or alcohol. If combined, consider a zuranolone dose reduction and monitor patients closely for increased CNS depressant effects. Risk D: Consider therapy modification

Pregnancy Considerations

Antipsychotic use during the third trimester of pregnancy has a risk for abnormal muscle movements (extrapyramidal symptoms [EPS]) and/or withdrawal symptoms in newborns following delivery. Symptoms in the newborn may include agitation, feeding disorder, hypertonia, hypotonia, respiratory distress, somnolence, and tremor; these effects may be self-limiting or require hospitalization.

Treatment algorithms have been developed by the ACOG and the APA for the management of depression in women prior to conception and during pregnancy (Yonkers 2009). The ACOG recommends that therapy during pregnancy be individualized; treatment with psychiatric medications during pregnancy should incorporate the clinical expertise of the mental health clinician, obstetrician, primary health care provider, and pediatrician. Safety data related to atypical antipsychotics during pregnancy is limited and routine use is not recommended. However, if a woman is inadvertently exposed to an atypical antipsychotic while pregnant, continuing therapy may be preferable to switching to a typical antipsychotic that the fetus has not yet been exposed to; consider risk:benefit (ACOG 2008).

Health care providers are encouraged to enroll women exposed to brexpiprazole during pregnancy in the National Pregnancy Registry for Atypical Antipsychotics (866-961-2388 or http://www.womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/).

Breastfeeding Considerations

It is not known if brexpiprazole is present in breast milk. According to the manufacturer, the decision to continue or discontinue breastfeeding during therapy should take into account the risk of exposure to the infant and the benefits of treatment to the mother.

Monitoring Parameters

Frequency of Antipsychotic Monitoringa,b

Monitoring parameter

Frequency of monitoring

Comments

Adherence

Every visit

Blood chemistries (electrolytes, renal function, liver function, TSH)

Annually

CBC

As clinically indicated

Check frequently during the first few months of therapy in patients with preexisting low WBC or history of drug-induced leukopenia/neutropenia

Extrapyramidal symptoms

Every visit; 4 weeks after initiation and dose change; annually. Use a formalized rating scale at least annually or every 6 months if high riskc

Fall risk

Every visit

Fasting plasma glucose/HbA1c

12 weeks after initiation and dose change; annually

Check more frequently than annually if abnormal. Follow diabetes guidelines.

Lipid panel

12 weeks after initiation and dose change; annually

Check more frequently than annually if abnormal. Follow lipid guidelines.

Mental status and alertness

Every visit

Metabolic syndrome history

Annually

Evaluate for personal and family history of obesity, diabetes, dyslipidemia, hypertension, or cardiovascular disease

Prolactin

Ask about symptoms at every visit until dose is stable. Check prolactin level if symptoms are reported.

Hyperprolactinemia symptoms: Changes in menstruation, libido, gynecomastia, development of galactorrhea, and erectile and ejaculatory function

Tardive dyskinesia

Every visit; annually. Use a formalized rating scale at least annually or every 6 months if high riskd

Vital signs (BP, orthostatics, temperature, pulse, signs of infection)

Every visit (at least weekly during first 3 to 4 weeks of treatment); 4 weeks after dose change.

Weight/Height/BMI

8 and 12 weeks after initiation and dose change; quarterly

Consider monitoring waist circumference at baseline and annually, especially in patients with or at risk for metabolic syndrome.

Consider changing antipsychotic if BMI increases by ≥1 unit.

Some experts recommend checking weight and height at every visit.

a For all monitoring parameters, it is appropriate for check at baseline and when clinically relevant (based on symptoms or suspected ADRs) in addition to the timeline.

b ADA 2004; APA [Keepers 2020]; de Hert 2011; Gugger 2011; manufacturer’s labeling.

c Risk factors for extrapyramidal symptoms (EPS) include prior history of EPS, high doses of antipsychotics, young age (children and adolescents at higher risk than adults), and dopaminergic affinity of individual antipsychotic.

d Risk factors for tardive dyskinesia include age >55 years; females; White or African ethnicity; presence of a mood disorder, intellectual disability, or CNS injury; and past or current EPS.

Reference Range

Timing of serum samples: Draw trough just before next dose (Hiemke 2018).

Therapeutic reference range: 40 to 140 ng/mL (Hiemke 2018). Note: Dosing should be based on therapeutic response as opposed to serum concentrations; however, therapeutic drug monitoring can be used to confirm adherence (APA [Keepers 2020]).

Laboratory alert level: 280 ng/mL (Hiemke 2018).

Mechanism of Action

Brexpiprazole exhibits partial agonist activity for 5-HT1A and D2 receptors and antagonist activity for 5-HT2A receptors.

Pharmacokinetics (Adult Data Unless Noted)

Onset of action: Oral:

Major depressive disorder, unipolar: Initial effects may be observed within 1 week with continued improvements over 6 to 12 weeks (Wen 2014).

Schizophrenia: Initial effects may be observed within 1 to 2 weeks of treatment with continued improvements through 4 to 6 weeks (Agid 2003; Levine 2010).

Distribution: Vd: IV: 1.56 L/kg

Protein binding: >99%, primarily to serum albumin and alpha1-acid glycoprotein

Metabolism: Hepatic, primarily by CYP3A4 and CYP2D6; major metabolite, DM-3411 (inactive)

Bioavailability: 95%

Half-life elimination: Terminal: Brexpiprazole: 91 hours; DM-3411: 86 hours

Time to peak, plasma: Within 4 hours

Excretion: Feces (46%, ~14% of the total dose as unchanged drug); urine (25%, <1% of the total dose as unchanged drug)

Pharmacokinetics: Additional Considerations (Adult Data Unless Noted)

Altered kidney function: AUC was increased in patients with renal impairment (CrCl <60 mL/minute) compared to patients with normal renal function.

Hepatic function impairment: AUC increased in patients with moderate to severe hepatic impairment.

CYP2D6 poor metabolizers: Increased Cmax is observed in CYP2D6 poor metabolizers compared to normal CYP2D6 metabolizers.

Brand Names: International
International Brand Names by Country
For country code abbreviations (show table)

  • (AE) United Arab Emirates: Rexulti;
  • (AR) Argentina: Rexulti;
  • (AU) Australia: Rexulti;
  • (BD) Bangladesh: Brexi;
  • (BR) Brazil: Rexulti;
  • (CH) Switzerland: Rexulti;
  • (CL) Chile: Rexulti;
  • (CZ) Czech Republic: Rxulti;
  • (EG) Egypt: Neopression | Rexulti;
  • (FI) Finland: Rxulti;
  • (GB) United Kingdom: Rxulti;
  • (HU) Hungary: Rxulti;
  • (ID) Indonesia: Rexulti;
  • (IT) Italy: Rxulti;
  • (JP) Japan: Rexulti;
  • (KE) Kenya: Brexi;
  • (KW) Kuwait: Rexulti;
  • (MX) Mexico: Rexulti;
  • (MY) Malaysia: Rexulti;
  • (NL) Netherlands: Rxulti;
  • (NO) Norway: Rxulti;
  • (PH) Philippines: Rexulti;
  • (SA) Saudi Arabia: Rexulti;
  • (SG) Singapore: Rexulti;
  • (SI) Slovenia: Rxulti;
  • (TW) Taiwan: Rexulti;
  • (UA) Ukraine: Rexulti
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Topic 102739 Version 248.0

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