Pronunciation

(ay ri PIP ray zole lawr OX il)

Dosage Forms

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

Prefilled Syringe, Intramuscular:

Aristada: 1064 mg/3.9 mL (3.9 mL); 441 mg/1.6 mL (1.6 mL); 662 mg/2.4 mL (2.4 mL); 882 mg/3.2 mL (3.2 mL)

Brand Names: U.S.

• Aristada

Pharmacologic Category

• Second Generation (Atypical) Antipsychotic

Pharmacology

Aripiprazole lauroxil is a prodrug of aripiprazole. Following intramuscular injection, aripiprazole lauroxil is likely converted by enzyme-mediated hydrolysis to N-hydroxymethyl aripiprazole, which is then hydrolyzed to aripiprazole. Aripiprazole is a quinolinone antipsychotic that exhibits high affinity for D₂, D₃, 5-HT_1A, and 5-HT_2A receptors; moderate affinity for D₄, 5-HT_2C, 5-HT₇, alpha₁ adrenergic, and H₁ receptors (de Bartolomeis 2015). It also possesses moderate affinity for the serotonin reuptake transporter; has no affinity for muscarinic (cholinergic) receptors. Aripiprazole functions as a partial agonist at the D₂ and 5-HT_1A receptors, and as an antagonist at the 5-HT_2A receptor.

Distribution

V_d: 268 L

Metabolism

Prodrug; undergoes enzyme-mediated hydrolysis to N-hydroxymethyl aripiprazole followed by water-mediated hydrolysis to aripiprazole. Aripiprazole undergoes hepatic metabolism via CYP2D6, CYP3A4 (dehydro-aripiprazole metabolite has affinity for D₂ receptors similar to the parent drug and represents 40% of the parent drug exposure in plasma).

Onset of Action

5 to 6 days following injection; 4 days following injection when administered concomitantly with oral aripiprazole.

Duration of Action

36 days following appearance in the systemic circulation.

Half-Life Elimination

53 to 57 days

Protein Binding

>99%, primarily to albumin.

Use: Labeled Indications

Schizophrenia: Treatment of schizophrenia.

Contraindications

Hypersensitivity (eg, anaphylaxis, pruritus, urticaria) to aripiprazole or any component of the formulation.

Dosing: Adult

Schizophrenia: IM: Establish tolerability with oral aripiprazole prior to initiating treatment with aripiprazole lauroxil (may take up to 2 weeks). Base the initial aripiprazole lauroxil dose on the current oral aripiprazole dose and administer in conjunction with oral aripiprazole for 21 consecutive days. Adjust dose as needed; if a dose is required earlier than the recommended interval(s), do not administer <14 days after the previous injection.

Oral aripiprazole 10 mg/day: Initial intramuscular aripiprazole lauroxil dose: 441 mg per month

Oral aripiprazole 15 mg/day: Initial intramuscular aripiprazole lauroxil dose: 662 mg per month OR 882 mg every 6 weeks OR 1064 mg every 2 months

Oral aripiprazole ≥20 mg/day: Initial intramuscular aripiprazole lauroxil dose: 882 mg every month

Missed dose: Administer as soon as possible. Supplementation with oral aripiprazole may be required. In patients who require oral supplementation, administer the same dose of oral aripiprazole that the patient was receiving prior to initiation of aripiprazole lauroxil:

Current dose of aripiprazole lauroxil: 441 mg per month:

Last injection occurred ≤6 weeks ago: Administer aripiprazole lauroxil immediately; no oral aripiprazole supplementation required.

Last injection occurred >6 and ≤7 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 7 days.

Last injection occurred >7 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 21 days.

Current dose of aripiprazole lauroxil: 662 to 882 mg per month or 882 mg every 6 weeks:

Last injection occurred ≤8 weeks ago: Administer aripiprazole lauroxil immediately; no oral aripiprazole supplement.

Last injection occurred >8 and ≤12 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 7 days.

Last injection occurred >12 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 21 days.

Current dose of aripiprazole lauroxil: 1064 mg every 2 months:

Last injection occurred ≤10 weeks ago: Administer aripiprazole lauroxil immediately; no oral aripiprazole supplement.

Last injection occurred >10 and ≤12 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 7 days.

Last injection occurred >12 weeks ago: Administer aripiprazole lauroxil immediately in conjunction with oral aripiprazole supplementation for 21 days.

Dosage adjustment for concomitant therapy (patients stabilized on aripiprazole lauroxil):

CYP450 modulators added for <2 weeks: No dosage adjustment necessary.

Initiation of a strong CYP3A4 inhibitor for ≥2 weeks: Reduce the dose of aripiprazole lauroxil to the next lower strength; in patients receiving 882 mg every 6 weeks or 1064 mg every 2 months, the next lower dose should be 441 mg every month. If the patient is a known poor metabolizer of CYP2D6, reduce the aripiprazole lauroxil dose to 441 mg regardless of the current dose. In patients receiving aripiprazole lauroxil 441 mg, no dosage adjustment necessary, if tolerated.

Initiation of a strong CYP2D6 inhibitor for ≥2 weeks: Reduce the dose of aripiprazole lauroxil to the next lower strength; in patients receiving 882 mg every 6 weeks or 1064 mg every 2 months, the next lower dose should be 441 mg every month. If the patient is a known poor metabolizer of CYP2D6 or if the patient is receiving aripiprazole lauroxil 441 mg, no dosage adjustment necessary, if tolerated.

Initiation of both a strong CYP3A4 and a strong CYP2D6 inhibitor for ≥2 weeks: Avoid use in patients receiving aripiprazole lauroxil 662 mg, 882 mg, or 1064 mg. In patients receiving aripiprazole lauroxil 441 mg, no dosage adjustment necessary, if tolerated.

Initiation of CYP3A4 inducer for ≥2 weeks: In patients receiving aripiprazole lauroxil 441 mg, increase the dose to 662 mg. In patients receiving aripiprazole lauroxil 662 mg, 882 mg, or 1064 mg, no dosage adjustment necessary.

Dosing: Renal Impairment

No dosage adjustment necessary.

Dosing: Hepatic Impairment

No dosage adjustment necessary.

Administration

Administer via IM injection in the deltoid muscle (441 mg dose only) or gluteal muscle over <10 seconds. Prior to administration, tap the syringe at least 10 times and then shake the syringe vigorously ≥30 seconds to ensure a uniform suspension. If the syringe is not used within 15 minutes, shake again for 30 seconds. Use the appropriate sized needle for the injection site; 1- to 1.5-inch needle for deltoid injection and 1.5- or 2-inch needle for gluteal injection. Patients with a larger amount of subcutaneous tissue overlaying the injection site muscle should use the longer of the needles provided

Storage

Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C and 30°C (59°F and 86°F).

Drug Interactions

Abiraterone Acetate: May increase the serum concentration of CYP2D6 Substrates. Management: Avoid concurrent use of abiraterone with CYP2D6 substrates that have a narrow therapeutic index whenever possible. When concurrent use is not avoidable, monitor patients closely for signs/symptoms of toxicity. Consider therapy modification

Acetylcholinesterase Inhibitors (Central): May enhance the neurotoxic (central) effect of Antipsychotic Agents. Severe extrapyramidal symptoms have occurred in some patients. Monitor therapy

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

Amisulpride: Antipsychotic Agents may enhance the adverse/toxic effect of Amisulpride. Avoid combination

Amphetamines: Antipsychotic Agents may diminish the stimulatory effect of Amphetamines. Monitor therapy

Analgesics (Opioid): CNS Depressants may enhance the CNS depressant effect of Analgesics (Opioid). Management: Avoid concomitant use of opioid analgesics 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. Consider therapy modification

Antidiabetic Agents: Hyperglycemia-Associated Agents may diminish the therapeutic effect of Antidiabetic Agents. 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 using an alternative antipsychotic agent when possible in patients with Parkinson disease. If an atypical antipsychotic is necessary, consider using clozapine or quetiapine, which may convey the lowest interaction risk. Consider therapy modification

Aprepitant: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

Asunaprevir: May increase the serum concentration of CYP2D6 Substrates. Consider therapy modification

Azelastine (Nasal): CNS Depressants may enhance the CNS depressant effect of Azelastine (Nasal). Avoid combination

Blonanserin: CNS Depressants may enhance the CNS depressant effect of Blonanserin. Consider therapy modification

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

Bosentan: May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

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

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 patches (Butrans brand) at 5 mcg/hr in adults when used with other CNS depressants. Consider therapy modification

Cannabis: May enhance the CNS depressant effect of CNS Depressants. 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. Consider therapy modification

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

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

Conivaptan: May increase the serum concentration of CYP3A4 Substrates. Avoid combination

CYP2D6 Inhibitors (Moderate): May decrease the metabolism of CYP2D6 Substrates. Monitor therapy

CYP2D6 Inhibitors (Strong): May increase serum concentrations of the active metabolite(s) of ARIPiprazole Lauroxil. Management: Please refer to the full interaction monograph for details concerning the recommended dose adjustments. Consider therapy modification

CYP3A4 Inducers (Moderate): May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

CYP3A4 Inducers (Strong): May decrease serum concentrations of the active metabolite(s) of ARIPiprazole Lauroxil. Management: Patients taking the 441 mg dose of aripiprazole lauroxil increase their dose to 662 mg if used with a strong CYP3A4 inducer for more than 14 days. No dose adjustment is necessary for patients using the higher doses of aripiprazole lauroxil. Consider therapy modification

CYP3A4 Inhibitors (Moderate): May decrease the metabolism of CYP3A4 Substrates. Monitor therapy

CYP3A4 Inhibitors (Strong): May increase serum concentrations of the active metabolite(s) of ARIPiprazole Lauroxil. Management: Please refer to the full interaction monograph for details concerning the recommended dose adjustments. Consider therapy modification

Dabrafenib: May decrease the serum concentration of CYP3A4 Substrates. Management: Seek alternatives to the CYP3A4 substrate when possible. If concomitant therapy cannot be avoided, monitor clinical effects of the substrate closely (particularly therapeutic effects). Consider therapy modification

Dasatinib: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

Deferasirox: May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

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

Doxylamine: May enhance the CNS depressant effect of CNS Depressants. Management: The manufacturer of Diclegis (doxylamine/pyridoxine), intended for use in pregnancy, specifically states that use with other CNS depressants is not recommended. Monitor therapy

Dronabinol: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy

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

Enzalutamide: May decrease the serum concentration of CYP3A4 Substrates. Management: Concurrent use of enzalutamide with CYP3A4 substrates that have a narrow therapeutic index should be avoided. Use of enzalutamide and any other CYP3A4 substrate should be performed with caution and close monitoring. Consider therapy modification

Flunitrazepam: CNS Depressants may enhance the CNS depressant effect of Flunitrazepam. Consider therapy modification

Fosaprepitant: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

Fusidic Acid (Systemic): May increase the serum concentration of CYP3A4 Substrates. Avoid combination

Highest Risk QTc-Prolonging Agents: QTc-Prolonging Agents (Indeterminate Risk and Risk Modifying) may enhance the QTc-prolonging effect of Highest Risk QTc-Prolonging Agents. Management: Avoid such combinations when possible. Use should be accompanied by close monitoring for evidence of QT prolongation or other alterations of cardiac rhythm. Consider therapy modification

HYDROcodone: CNS Depressants may enhance the CNS depressant effect of HYDROcodone. Management: Avoid concomitant use of hydrocodone 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. Consider therapy modification

HydrOXYzine: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy

Idelalisib: May increase the serum concentration of CYP3A4 Substrates. Avoid combination

Imatinib: May increase the serum concentration of CYP2D6 Substrates. 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 anticonvulsants. 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 anticonvulsants. 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 anticonvulsants. Consider therapy modification

Kava Kava: May enhance the adverse/toxic effect of CNS Depressants. Monitor therapy

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

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

Magnesium Sulfate: May enhance the CNS depressant effect of CNS Depressants. 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. 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 adult dose of CNS depressant agents by 50% with initiation of concomitant methotrimeprazine therapy. Further CNS depressant dosage adjustments should be initiated only after clinically effective methotrimeprazine dose is established. Consider therapy modification

Methylphenidate: Antipsychotic Agents may enhance the adverse/toxic effect of Methylphenidate. Methylphenidate may enhance the adverse/toxic effect of Antipsychotic Agents. Monitor therapy

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

MetyroSINE: CNS Depressants may enhance the sedative effect of MetyroSINE. Monitor therapy

MetyroSINE: May enhance the adverse/toxic effect of Antipsychotic Agents. Monitor therapy

MiFEPRIStone: May increase the serum concentration of CYP3A4 Substrates. Management: Minimize doses of CYP3A4 substrates, and monitor for increased concentrations/toxicity, during and 2 weeks following treatment with mifepristone. Avoid cyclosporine, dihydroergotamine, ergotamine, fentanyl, pimozide, quinidine, sirolimus, and tacrolimus. Consider therapy modification

MiFEPRIStone: May enhance the QTc-prolonging effect of QTc-Prolonging Agents (Indeterminate Risk and Risk Modifying). Management: Though the drugs listed here have uncertain QT-prolonging effects, they all have some possible association with QT prolongation and should generally be avoided when possible. Consider therapy modification

Minocycline: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy

Mirtazapine: CNS Depressants may enhance the CNS depressant effect of Mirtazapine. Monitor therapy

Mitotane: May decrease the serum concentration of CYP3A4 Substrates. Management: Doses of CYP3A4 substrates may need to be adjusted substantially when used in patients being treated with mitotane. Consider therapy modification

Moderate Risk QTc-Prolonging Agents: QTc-Prolonging Agents (Indeterminate Risk and Risk Modifying) may enhance the QTc-prolonging effect of Moderate Risk QTc-Prolonging Agents. Monitor therapy

Nabilone: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy

Netupitant: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

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

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

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. Consider therapy modification

Palbociclib: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

Panobinostat: May increase the serum concentration of CYP2D6 Substrates. Management: Avoid concurrent use of sensitive CYP2D6 substrates when possible, particularly those substrates with a narrow therapeutic index. Consider therapy modification

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

Peginterferon Alfa-2b: May decrease the serum concentration of CYP2D6 Substrates. Peginterferon Alfa-2b may increase the serum concentration of CYP2D6 Substrates. Monitor therapy

Perampanel: May enhance the CNS depressant effect of CNS Depressants. Management: Patients taking perampanel with any other drug that has CNS depressant activities should avoid complex and high-risk activities, particularly those such as driving that require alertness and coordination, until they have experience using the combination. Consider therapy modification

Perhexiline: CYP2D6 Substrates may increase the serum concentration of Perhexiline. Perhexiline may increase the serum concentration of CYP2D6 Substrates. 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. Avoid combination

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

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

Sarilumab: May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

Selective Serotonin Reuptake Inhibitors: CNS Depressants may enhance the adverse/toxic effect of Selective Serotonin Reuptake Inhibitors. Specifically, the risk of psychomotor impairment may be enhanced. Monitor therapy

Serotonin Modulators: May enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, serotonin modulators may enhance dopamine blockade, possibly increasing the risk for neuroleptic malignant syndrome. Antipsychotic Agents may enhance the serotonergic effect of Serotonin Modulators. This could result in serotonin syndrome. Exceptions: Nicergoline. Monitor therapy

Siltuximab: May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

Simeprevir: May increase the serum concentration of CYP3A4 Substrates. Monitor therapy

Sodium Oxybate: May enhance the CNS depressant effect of CNS Depressants. Management: Consider alternatives to combined use. When combined use is needed, consider minimizing doses of one or more drugs. Use of sodium oxybate with alcohol or sedative hypnotics is contraindicated. Consider therapy modification

St John's Wort: May decrease the serum concentration of CYP3A4 Substrates. Management: Consider an alternative for one of the interacting drugs. Some combinations may be specifically contraindicated. Consult appropriate manufacturer labeling. Consider therapy modification

Stiripentol: May increase the serum concentration of CYP3A4 Substrates. Management: Use of stiripentol with CYP3A4 substrates that are considered to have a narrow therapeutic index should be avoided due to the increased risk for adverse effects and toxicity. Any CYP3A4 substrate used with stiripentol requires closer monitoring. Consider therapy modification

Sulpiride: Antipsychotic Agents may enhance the adverse/toxic effect of Sulpiride. 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. Consider therapy modification

Tapentadol: May enhance the CNS depressant effect of CNS Depressants. Management: Avoid concomitant use of tapentadol 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. Consider therapy modification

Tetrahydrocannabinol: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy

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

Tocilizumab: May decrease the serum concentration of CYP3A4 Substrates. Monitor therapy

Trimeprazine: May enhance the CNS depressant effect of CNS Depressants. 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. Consider therapy modification

Adverse Reactions

>10%: Central nervous system: Akathisia (11%)

1% to 10%:

Central nervous system: Headache (5%), parkinsonian-like syndrome (4%), insomnia (3% to 4%), restlessness (3%), dystonia (2%)

Endocrine & metabolic: Weight gain (2%; ≥7% increase: 9% to 10%)

Local: Pain at injection site (3% to 4%)

Neuromuscular & skeletal: Increased creatine phosphokinase (1% to 2%)

Frequency not defined:

Cardiovascular: Angina pectoris, palpitations, tachycardia

Central nervous system: Anxiety, dizziness, myasthenia

Gastrointestinal: Constipation, xerostomia

Neuromuscular & skeletal: Weakness

<1% (Limited to important or life-threatening): Impulse control disorder (including pathologic gambling, binge eating, and hypersexuality) (FDA Safety Alert May 3, 2016), orthostatic hypotension

Warnings/Precautions

Concerns related to adverse effects:

• Altered cardiac conduction: May alter cardiac conduction; life-threatening arrhythmias have occurred with therapeutic doses of antipsychotics.

• 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 aripiprazole 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: Lipid changes, including increases in total cholesterol, LDL cholesterol, and triglycerides and decreases in HDL cholesterol, have been reported; risk profile may differ between antipsychotic agents.

• Esophageal dysmotility/aspiration: Antipsychotic use has been associated with esophageal dysmotility and aspiration; use with caution in patients at risk for aspiration pneumonia (eg, Alzheimer dementia) (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 [Lehman 2004]; 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. Complete fall risk assessments at baseline and periodically during treatment in patients with diseases or on medications that may also increase fall risk.

• 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 therapy; however, 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 (Gaboriau 2014; Moore 2014; Smith 2011).

• Neuroleptic malignant syndrome: Use may be associated with neuroleptic malignant syndrome (NMS); monitor for mental status changes, fever, muscle rigidity and/or autonomic instability.

• Orthostatic hypotension: May cause orthostatic hypotension; use with caution in patients at risk of this effect or in those who would not tolerate transient hypotensive episodes (cerebrovascular disease, cardiovascular disease, hypovolemia, or concurrent medication use which may predispose to hypotension/bradycardia).

• Temperature regulation: Impaired core body temperature regulation may occur; 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:

• Cardiovascular disease: Use with caution in patients with cardiac disease, cerebrovascular disease, prior myocardial infarction, ischemic heart disease, or conditions which predispose to hypotension.

• Dementia: [US Boxed Warning]: Elderly patients with dementia-related psychosis treated with antipsychotics are at an increased risk of death compared to placebo. Most deaths appeared to be either cardiovascular (eg, heart failure, sudden death) or infectious (eg, pneumonia) in nature. Use with caution in dementia with Lewy bodies; antipsychotics may worsen dementia symptoms and patients with dementia with Lewy bodies are more sensitive to the extrapyramidal side effects (APA [Rabins 2007]). Aripiprazole lauroxil is not approved for the treatment of dementia-related psychosis.

• Parkinson disease: Use with caution in patients with Parkinson disease; antipsychotics may aggravate motor disturbances (APA [Lehman 2004; Rabins 2007]).

• Seizures: Use with caution in patients at risk of seizures, including those with a history of seizures, head trauma, brain damage, alcoholism, or concurrent therapy with medications which may lower seizure threshold. Elderly patients may be at increased risk of seizures due to an increased prevalence of predisposing factors.

Concurrent drug therapy issues:

• Drug-drug interactions: Potentially significant interactions may exist, requiring dose or frequency adjustment, additional monitoring, and/or selection of alternative therapy. Consult drug interactions database for more detailed information.

Monitoring Parameters

Mental status; vital signs (as clinically indicated); blood pressure (baseline; repeat 3 months after antipsychotic initiation, then yearly); weight, height, BMI, waist circumference (baseline; repeat at 4, 8, and 12 weeks after initiating or changing therapy, then quarterly; consider switching to a different antipsychotic for a weight gain ≥5% of initial weight); CBC (as clinically indicated; monitor frequently during the first few months of therapy in patients with preexisting low WBC or history of drug-induced leukopenia/neutropenia); electrolytes and liver function (annually and as clinically indicated); personal and family history of obesity, diabetes, dyslipidemia, hypertension, or cardiovascular disease (baseline; repeat annually); fasting plasma glucose level/HbA_1c (baseline; repeat 3 months after starting antipsychotic, then yearly); fasting lipid panel (baseline; repeat 3 months after initiation of antipsychotic; if LDL level is normal repeat at 2- to 5-year intervals or more frequently if clinical indicated); changes in menstruation, libido, development of galactorrhea, erectile and ejaculatory function (yearly); abnormal involuntary movements or parkinsonian signs (baseline; repeat weekly until dose stabilized for at least 2 weeks after introduction and for 2 weeks after any significant dose increase); tardive dyskinesia (every 12 months; high-risk patients every 6 months); ocular examination (yearly in patients >40 years; every 2 years in younger patients) (ADA 2004; Lehman 2004; Marder 2004).

Pregnancy Considerations

Aripiprazole crosses the placenta; aripiprazole and dehydro-aripiprazole can be detected in the cord blood at delivery (Nguyen 2011; Watanabe 2011).

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.

Data collection to monitor pregnancy and infant outcomes following exposure to aripiprazole lauroxil is ongoing. Healthcare providers are encouraged to enroll women exposed to aripiprazole lauroxil during pregnancy in the National Pregnancy Registry for Atypical Antipsychotics at 1-866-961-2388 or visit http://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry.

Patient Education

• Discuss specific use of drug and side effects with patient as it relates to treatment. (HCAHPS: During this hospital stay, were you given any medicine that you had not taken before? Before giving you any new medicine, how often did hospital staff tell you what the medicine was for? How often did hospital staff describe possible side effects in a way you could understand?)

• Patient may experience headache, weight gain, agitation, or irritation where the injection is given. Have patient report immediately to prescriber signs of infection, signs of high blood sugar (confusion, fatigue, increased thirst, increased hunger, polyuria, flushing, fast breathing, or breath that smells like fruit), abnormal movements, twitching, change in balance, difficulty swallowing, vision changes, eye pain, eye irritation, difficulty speaking, severe dizziness, passing out, tachycardia, uncontrollable urges, seizures, signs of neuroleptic malignant syndrome (fever, muscle cramps or stiffness, dizziness, severe headache, confusion, change in thinking, tachycardia, abnormal heartbeat, or sweating a lot), or signs of tardive dyskinesia (unable to control body movements; tongue, face, mouth, or jaw sticking out; mouth puckering; or puffing cheeks) (HCAHPS).

• Educate patient about signs of a significant reaction (eg, wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat). Note: This is not a comprehensive list of all side effects. Patient should consult prescriber for additional questions.

Intended Use and Disclaimer: Should not be printed and given to patients. This information is intended to serve as a concise initial reference for health care professionals to use when discussing medications with a patient. You must ultimately rely on your own discretion, experience,and judgment in diagnosing, treating, and advising patients.