Quick Facts
Generic NameBrexpiprazole
Brand NameRexulti
Drug ClassSGA
FDA Approved2015
Starting Dose0.5–1mg/day
Typical Range2–4mg/day
Max Dose4mg/day
Half-Life91 hours
MetabolismCYP2D6, CYP3A4
Generic AvailableNot yet generic
What Is Rexulti?
Brexpiprazole (brand name Rexulti) is a second-generation (atypical) antipsychotic (SGA) prescribed for trd augmentation, schizophrenia, and other psychiatric conditions. Second partial dopamine agonist after aripiprazole. Less akathisia/activation than aripiprazole. Very long half-life (91 hours). FDA-approved for both TRD augmentation and schizophrenia. Lower akathisia rate may improve tolerability over aripiprazole.
At Psychiatry Telemed, brexpiprazole is prescribed and monitored by board-certified psychiatrists who understand the nuances of SGA pharmacology — selecting the right dose, managing side effects, monitoring drug interactions, and optimizing your treatment through consistent monthly medication management appointments.
Brexpiprazole (Rexulti) — SGA medication for psychiatric care
ManufacturerOtsuka / Lundbeck
How Rexulti Affects Neurotransmitters
How Rexulti Works
Brexpiprazole is a partial agonist at D2 and 5-HT1A receptors and an antagonist at 5-HT2A receptors — similar to aripiprazole but with different receptor binding affinities that produce less akathisia and less activation.
Efficacy: Rexulti vs. Comparators
Efficacy Comparison
Response & remission rates vs. comparators (Cipriani et al. meta-analysis)
Data from published meta-analyses. Individual response may vary.
Conditions Treated with Rexulti
Considering Rexulti?
Board-certified psychiatrists can determine if brexpiprazole is right for you.
Dosage Information
| Indication | Starting Dose | Typical Range | Maximum |
|---|---|---|---|
| TRD Augmentation | 0.5–1mg/day | 2–4mg/day | 4mg/day |
| Schizophrenia | 0.5–1mg/day | 2–4mg/day | 4mg/day |
Brain Regions Targeted by Rexulti
Side Effects
Like all medications, brexpiprazole has potential side effects. Most are mild, occur early in treatment, and resolve within 1–2 weeks. Your psychiatrist monitors at every appointment.
Common Side Effects
Weight GainDrowsiness/SedationDizzinessMetabolic EffectsAkathisiaDry Mouth
Less Common
Orthostatic HypotensionConstipationEPS/TremorProlactin ElevationQTc Changes
Serious (Seek Immediate Help)
Metabolic SyndromeNeuroleptic Malignant SyndromeTardive DyskinesiaDiabetic Ketoacidosis
Side Effect Profile: Rexulti vs. Class Average
Side Effect Profile
Incidence rates from FDA prescribing information vs. class average
Percentages from clinical trial data. Actual experience may differ.
⚠️ FDA Black Box Warning
Antidepressants may increase suicidal thinking in young adults under 25.
Drug Interactions
Major Interactions
CNS depressants (additive sedation), CYP inhibitors/inducers (varies by drug), QTc-prolonging agents
CYP Metabolism
Substrate of CYP2D6, CYP3A4. Consult drug interaction database for specific combinations.
Alcohol
Avoid alcohol during brexpiprazole treatment. Both affect the CNS, increasing sedation and impairing judgment.
Generic Versions & Cost
Generic brexpiprazole available since Not yet generic. Approximate cost: $300+/month (brand only). FDA-certified bioequivalent to brand-name Rexulti.
Starting Rexulti: What to Expect
First Weeks
Brexpiprazole is typically started at 0.5–1mg/day and increased gradually. Common initial side effects usually improve within 1–2 weeks. Full therapeutic benefit develops over 4–8 weeks.
When to Contact Your Psychiatrist
Contact your psychiatrist for: worsening depression/anxiety, thoughts of self-harm, unusual agitation, severe side effects, or any concerning changes.
Stopping Rexulti Safely
Never stop brexpiprazole abruptly. Your psychiatrist will develop a gradual tapering schedule to minimize discontinuation effects.
Timeline: When Rexulti Starts Working
Timeline to Effectiveness
Expected improvement trajectory over the first 8 weeks
Based on clinical trial data. Full therapeutic effects may take 6–8 weeks.
Get Rexulti from a Board-Certified Psychiatrist
At Psychiatry Telemed, brexpiprazole is prescribed following comprehensive evaluation. All Florida via HIPAA-compliant telepsychiatry. 1–3 days. $299 eval, $149 follow-up.
Frequently Asked Questions
Prescribed for trd augmentation, schizophrenia.
Typically 2–4 weeks for initial improvement, 4–8 weeks for full benefit.
Common: weight gain, drowsiness/sedation, dizziness, metabolic effects, akathisia. Most resolve within 1–2 weeks.
No. Not habit-forming but should not be stopped abruptly — gradual tapering recommended.
Second partial dopamine agonist after aripiprazole. Less akathisia/activation than aripiprazole. Very long half-life (91 hours). FDA-approved for both TRD augmentation and schizophrenia. Lower akathis
Alcohol should be avoided — increases sedation, impairs judgment, and may worsen symptoms.
Resources
Medical Disclaimer: Educational only. Consult a psychiatrist before starting/stopping medication. Crisis: call 988 or 911.
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