Postpartum depression (PPD) can make the early weeks of motherhood feel impossibly heavy—and when standard antidepressants take four to six weeks to work, many new mothers need faster options. IV ketamine and esketamine (Spravato) may offer measurable symptom relief within hours to days, rather than weeks, making them worth exploring when conventional treatments haven’t been enough.
This guide covers what the research says about ketamine for postpartum depression, addresses breastfeeding safety questions, and explains how medically supervised ketamine therapy works at Nushama in Manhattan.
Why Standard PPD Treatments Can Feel Too Slow
About 1 in 8 women in the United States experiences symptoms of postpartum depression after giving birth—that’s over 460,000 mothers each year, according to CDC data. And those numbers likely undercount the reality, since many cases go unreported.
First-line treatments typically include psychotherapy and selective serotonin reuptake inhibitors (SSRIs). These approaches help many people, but they come with specific challenges for new mothers:
- SSRIs take time. Most antidepressants require four to six weeks of consistent use before their full effects emerge. For a mother struggling to bond with her baby or manage basic daily tasks, those weeks can feel like months.
- Breastfeeding concerns narrow options. Some medications carry uncertain safety profiles for nursing mothers, which can limit what a prescribing physician feels comfortable recommending.
- The bonding window is finite. Early parent-infant attachment shapes long-term development. When depression disrupts this critical period, the urgency for relief isn’t abstract—it’s biological and relational.
In 2023, the FDA approved Zurzuvae (zuranolone), the first oral medication specifically for PPD, which represented a meaningful step forward. But the treatment landscape is still evolving, and ketamine-based therapies offer a different mechanism and timeline that some mothers may find more helpful.
How Ketamine Works Differently in the Brain
Traditional antidepressants primarily target serotonin, norepinephrine, or dopamine—neurotransmitters that regulate mood over weeks of consistent dosing. Ketamine takes a fundamentally different approach.
Ketamine is an NMDA (N-methyl-D-aspartate) receptor antagonist. Instead of slowly adjusting serotonin levels, it works on the glutamate system—the brain’s primary excitatory neurotransmitter pathway. This action triggers a cascade that may promote neuroplasticity (the brain’s ability to form and strengthen new neural connections), potentially helping to restore healthier patterns of thinking and emotional regulation.
Research from Yale School of Medicine demonstrated that ketamine could produce rapid antidepressant effects after a single intravenous dose—a finding that fundamentally changed how researchers think about treating depression. While SSRIs may take weeks, ketamine’s effects on mood can sometimes be observed within hours, with clinical benefits often appearing within days.
This speed matters enormously for new mothers. When you’re navigating sleep deprivation, hormonal shifts, and the demands of caring for a newborn, the difference between “relief in hours” and “relief in weeks” can change the trajectory of early motherhood.
What the Research Shows About Ketamine and PPD
Several recent studies have explored whether ketamine and esketamine (a more potent derivative of ketamine) can reduce the risk and severity of postpartum depression. While much of this research focuses on prevention rather than treatment of established PPD, the findings are encouraging.
The Wang et al. 2024 BMJ Trial
In a randomized, double-blind trial published in The BMJ, researchers studied 364 mothers with prenatal depression across five hospitals in China. Participants received either a single low dose (0.2 mg/kg) of esketamine or placebo infused intravenously after childbirth. At 42 days postpartum, only 6.7% of mothers in the esketamine group experienced a major depressive episode, compared to 25.4% in the placebo group—a roughly 75% reduction in risk. Edinburgh Postnatal Depression Scale scores were also significantly lower in the esketamine group at both 7 and 42 days postpartum (Wang et al., BMJ 2024, as reviewed by MGH Center for Women’s Mental Health).
The 2025 Meta-Analysis
A 2025 systematic review and meta-analysis published in BMC Pregnancy and Childbirth (Darwish et al.) analyzed multiple randomized controlled trials and found that both ketamine and esketamine significantly decreased the incidence of short-term and long-term PPD compared to control groups.
Ketamine-Assisted Psychotherapy for Postpartum Mood Disorders
A 2025 case series published in Frontiers in Psychiatry (Christnacht et al.) documented the use of ketamine-assisted psychotherapy specifically for postpartum mood and anxiety disorders—one of the first studies to examine ketamine combined with psychotherapy in this population. While the sample size was limited, the findings suggest that pairing ketamine with therapeutic support may address both biological and psychological dimensions of PPD.
An Important Nuance
Most published studies examine esketamine administered during or immediately after cesarean delivery to prevent PPD in at-risk mothers. As the MGH Center for Women’s Mental Health notes, these results show that ketamine and esketamine may prevent or reduce risk for PPD, but “further studies are needed to determine whether ketamine and esketamine are effective for the treatment of postpartum depression” once it has already developed. That said, ketamine’s well-documented antidepressant effects in treatment-resistant depression provide a strong rationale for its use in PPD that hasn’t responded to conventional care.
Is Ketamine Safe During Breastfeeding?
This is one of the first questions new mothers ask—and it deserves a thorough, honest answer.
According to the National Institutes of Health’s LactMed database, ketamine and its active metabolite appear in breast milk in very low levels, and its oral bioavailability is low, “indicating a low risk to breastfed infants.” Available data suggest that ketamine use in nursing mothers may not affect the breastfed infant or lactation.
A review published in the Canadian Journal of Psychiatry (Swainson, 2025) reported that the relative infant dose (RID) of both ketamine and its metabolite norketamine is less than 1%—well below the 10% threshold generally considered minimal risk during breastfeeding.
The InfantRisk Center at Texas Tech University Health Sciences Center notes that a brief waiting period of approximately 8 hours following a ketamine dose may significantly reduce any exposure to the infant. Given that ketamine infusions are typically administered one or two times per week, some mothers may choose to pump and store milk before treatment and resume breastfeeding after the waiting period.
The bottom line: Current evidence suggests that low-dose ketamine carries a low risk for breastfed infants, but the data remains limited. Any decision about ketamine and breastfeeding should be made together with your prescribing physician and pediatrician, weighing the benefits of treating your depression against the small but not yet fully characterized risks to your infant.
IV Ketamine vs. Esketamine (Spravato): Understanding Your Options
At Nushama, we primarily use IV ketamine for postpartum depression treatment, and also offer Spravato (esketamine)—an FDA-approved nasal spray for treatment-resistant depression. Here’s how they compare:
IV Ketamine
- Administered intravenously with precise, individually adjusted dosing
- Provides 100% bioavailability, meaning the full dose reaches the bloodstream immediately
- Allows clinicians to adjust the infusion rate in real time based on your response
- Typically delivered in a series of six sessions over three to six weeks
Esketamine (Spravato)
- A nasal spray form of esketamine, which is a more potent derivative of ketamine
- FDA-approved for treatment-resistant depression (though not specifically for PPD)
- Often covered by insurance, which can make it more financially accessible
- Administered in a certified healthcare setting under observation
Both options require medical supervision and monitoring during and after each session. The choice between them often comes down to clinical factors, insurance considerations, and your physician’s assessment of which approach may work best for your situation.
What Treatment Looks Like at Nushama
If you’re a new mother in Manhattan considering ketamine therapy for postpartum depression, here’s what the process involves at Nushama:
1. Medical Intake
Your journey begins with a thorough medical evaluation. Our team reviews your medical history, current medications, and postpartum symptoms to confirm that ketamine is an appropriate option for you. Pre-treatment testing can include blood work, urine tests, blood pressure checks, and an EKG.
2. Preparation
Ketamine therapy works best when you come prepared. Our clinicians help you set an intention for treatment—what you hope to explore or release during the experience. This preparation step is especially important for new mothers, who may want to focus on reconnecting with joy, reducing the weight of anxiety, or restoring their sense of themselves.
3. Treatment Sessions
Nushama physicians typically administer six IV infusions over a three-to-six-week period, with up to two sessions per week. Each session takes place in a serene, calming environment with ambient music. Your vitals and anesthesia levels are continuously monitored by our medical team throughout.
4. Integration
After your sessions, licensed therapists or trained integration coaches work with you to weave insights from your experience into your daily life. For new mothers, integration might include strategies for managing the emotional demands of early parenthood, strengthening the bond with your baby, or addressing patterns of thought that depression has reinforced.
This preparation-and-integration model distinguishes clinical ketamine therapy from simply receiving an infusion. The medicine may open a window; the therapeutic work helps you walk through it.
Practical Considerations for New Mothers
Timing Your Sessions
Many mothers schedule infusions during times when a partner, family member, or postpartum doula can care for their baby. Each session typically lasts about 90 minutes, and you may feel drowsy or slightly disoriented for a few hours afterward, so plan for someone to accompany you and help with childcare for the rest of the day.
Coordinating with Your Care Team
If you’re already working with an OB/GYN, psychiatrist, or therapist, we encourage open communication between your providers. Ketamine therapy works best as part of a coordinated care plan, not as a standalone intervention.
Understanding That Healing Takes Support
Postpartum depression doesn’t develop in isolation, and it doesn’t resolve in isolation either. At Nushama, we view ketamine as a catalyst—one that may help lift the heaviest symptoms so you can engage more fully with the therapeutic and relational work that supports lasting change. Community, professional support, and a safe environment all matter.
Frequently Asked Questions
How quickly can ketamine help with postpartum depression symptoms?
While individual responses vary, ketamine’s antidepressant effects can sometimes be noticed within hours of the first infusion, with more substantial improvement often emerging over the first few sessions. This is meaningfully faster than the four-to-six-week timeline typical of SSRIs.
Is ketamine FDA-approved for postpartum depression?
Ketamine is FDA-approved as an anesthetic, and its use for depression is considered off-label. Esketamine (Spravato) is FDA-approved for treatment-resistant depression in adults, though not specifically for PPD. Off-label use of ketamine for depression is well-supported by clinical evidence and is a common practice in psychiatric care.
Can I continue breastfeeding during ketamine treatment?
Current evidence suggests that ketamine transfers into breast milk at very low levels and carries a low risk to breastfed infants. However, this is a conversation to have with your care team. Some mothers choose to pump before treatment and wait approximately 8 hours before nursing again, though this approach is a personal decision made in consultation with your physician and pediatrician.
How many ketamine sessions are typically recommended for PPD?
Most treatment protocols involve six IV infusions over three to six weeks. After the initial series, some members benefit from periodic maintenance sessions. Your treatment plan is individualized based on your response and ongoing needs.
What side effects should I be aware of?
Common side effects during a ketamine infusion can include mild dissociation (a feeling of being slightly detached from your surroundings), drowsiness, nausea, and temporary changes in blood pressure. These effects are monitored closely by our medical team during each session and typically resolve within a few hours.
Does insurance cover ketamine therapy for postpartum depression?
IV ketamine is generally not covered by insurance. However, Spravato (esketamine) is often covered for treatment-resistant depression. We recommend contacting our team to discuss the financial options available to you.
If you’re a new mother living with postpartum depression and standard treatments haven’t brought the relief you need, you don’t have to keep waiting. Speak with our care team to learn whether ketamine therapy may be right for you.
