Quick Facts
Generic NameBrexanolone
Brand NameZulresso
Drug ClassNeurosteroid
FDA Approved2019
Starting Dose60hr continuous IV infusion
Typical RangeSingle 60-hour infusion
Max DoseSingle course
Half-Life9 hours
MetabolismMultiple pathways
Generic AvailableNot generic
What Is Zulresso?
Brexanolone (brand name Zulresso) is a gaba-a receptor positive allosteric modulator (Neurosteroid) prescribed for postpartum depression, and other psychiatric conditions. FIRST drug specifically FDA-approved for postpartum depression. Fastest antidepressant onset (hours, not weeks). Administered as 60-hour continuous IV infusion in certified healthcare facility. REMS program required. Single treatment course. Extremely expensive ($34,000+). Breakthrough therapy.
At Psychiatry Telemed, brexanolone is prescribed and monitored by board-certified psychiatrists who understand the nuances of Neurosteroid pharmacology — selecting the right dose, managing side effects, monitoring drug interactions, and optimizing your treatment through consistent monthly medication management appointments.
Brexanolone (Zulresso) — Neurosteroid medication for psychiatric care
ManufacturerSage Therapeutics
How Zulresso Affects Neurotransmitters
How Zulresso Works
Brexanolone is a synthetic form of allopregnanolone, a neurosteroid that naturally fluctuates during pregnancy and drops precipitously after delivery. It positively modulates GABA-A receptors, restoring the neurosteroid tone that PPD disrupts. Onset within 24 hours of infusion start.
Efficacy: Zulresso 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 Zulresso
Postpartum Depression
FDA-approved for PPD. First drug specifically approved for postpartum depression. Rapid onset (within 24 hours).
Learn About Postpartum DepressionConsidering Zulresso?
Board-certified psychiatrists can determine if brexanolone is right for you.
Dosage Information
| Indication | Starting Dose | Typical Range | Maximum |
|---|---|---|---|
| Postpartum Depression | 60hr continuous IV infusion | Single 60-hour infusion | Single course |
Brain Regions Targeted by Zulresso
Side Effects
Like all medications, brexanolone 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
NauseaHeadacheDrowsinessInsomniaDry MouthDizzinessSweating
Less Common
ConstipationAppetite ChangesTremorSexual DysfunctionFatigue
Serious (Seek Immediate Help)
Serotonin SyndromeSevere Allergic ReactionSuicidal Thoughts (under 25)
Side Effect Profile: Zulresso 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
Excessive sedation and sudden loss of consciousness. REMS program — must be administered in certified healthcare facility with continuous monitoring.
Drug Interactions
Major Interactions
CNS depressants (additive), opioids (respiratory depression risk)
CYP Metabolism
Multiple metabolic pathways. Few clinically significant drug interactions.
Alcohol
Avoid alcohol during brexanolone treatment. Both affect the CNS, increasing sedation and impairing judgment.
Generic Versions & Cost
Generic brexanolone available since Not generic. Approximate cost: $34,000+ per treatment course. FDA-certified bioequivalent to brand-name Zulresso.
Starting Zulresso: What to Expect
First Weeks
Brexanolone is typically started at 60hr continuous IV infusion 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 Zulresso Safely
Never stop brexanolone abruptly. Your psychiatrist will develop a gradual tapering schedule to minimize discontinuation effects.
Timeline: When Zulresso 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 Zulresso from a Board-Certified Psychiatrist
At Psychiatry Telemed, brexanolone is prescribed following comprehensive evaluation. All Florida via HIPAA-compliant telepsychiatry. 1–3 days. $200 eval, $100 follow-up.
Frequently Asked Questions
Prescribed for postpartum depression.
Typically 2–4 weeks for initial improvement, 4–8 weeks for full benefit.
Common: nausea, headache, drowsiness, insomnia, dry mouth. Most resolve within 1–2 weeks.
No. Not habit-forming but should not be stopped abruptly — gradual tapering recommended.
FIRST drug specifically FDA-approved for postpartum depression. Fastest antidepressant onset (hours, not weeks). Administered as 60-hour continuous IV infusion in certified healthcare facility. REMS p
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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