Medical note: This article is for educational purposes only and is not a substitute for medical advice. If you are pregnant, trying to conceive, or breastfeeding while taking Rexulti, talk with your obstetrician, psychiatrist, pediatrician, or pharmacist before making any medication changes.
Pregnancy already comes with enough decisions to make a person feel like they are running a tiny human start-up: vitamins, appointments, sleep positions, food safety, and suddenly everyone has an opinion about deli meat. Add a prescription medication like Rexulti into the picture, and the question becomes much more serious: Can you take Rexulti while pregnant or breastfeeding?
The honest answer is: maybe, but only after a careful risk-benefit conversation with your healthcare team. Rexulti, the brand name for brexpiprazole, is an atypical antipsychotic used as an add-on treatment for major depressive disorder in adults, to treat schizophrenia in adults and some adolescents, and to treat agitation associated with dementia due to Alzheimer’s disease. For people who rely on Rexulti to stay stable, stopping it suddenly can bring real risks. At the same time, the available pregnancy and breastfeeding data are limited, so this is not a “just wing it and hope for the best” situation.
What Is Rexulti?
Rexulti is a prescription medication that affects dopamine and serotonin activity in the brain. These chemical messengers play important roles in mood, thinking, perception, motivation, and emotional regulation. Rexulti is often described as a serotonin-dopamine activity modulator, which is a fancy way of saying it does not simply “turn brain chemicals on or off.” Instead, it helps adjust signaling in several pathways.
Doctors may prescribe Rexulti for different reasons, including depression that has not responded enough to an antidepressant alone or symptoms of schizophrenia such as hallucinations, delusions, disorganized thinking, or severe mood and behavioral changes. Because untreated mental health conditions can affect sleep, nutrition, prenatal care, safety, relationships, and postpartum recovery, medication decisions during pregnancy are rarely simple.
Can You Take Rexulti While Pregnant?
There are no adequate and well-controlled studies in pregnant humans that clearly prove Rexulti is safe during pregnancy. That does not automatically mean Rexulti is dangerous for every pregnancy. It means the evidence is limited, and decisions must be individualized.
The official prescribing information notes that newborns exposed to antipsychotic medications like Rexulti during the third trimester may be at risk for extrapyramidal symptoms or withdrawal symptoms after birth. These can include abnormal muscle tone, tremor, agitation, sleepiness, breathing trouble, and feeding problems. Some babies recover within hours or days with observation, while others may need longer monitoring or hospitalization.
Animal studies did not show birth defects at certain tested doses, but animal data do not always predict human outcomes. In one animal study involving exposure through pregnancy and lactation, high-dose exposure was linked with increased early pup deaths and lower pup weight. That is one reason healthcare professionals avoid giving a casual “sure, it is fine” answer.
What About Birth Defects?
For Rexulti specifically, human pregnancy data are still too limited to estimate a clear risk of major birth defects or miscarriage. However, broader research on antipsychotic medications has not generally shown a large increase in congenital malformations with many antipsychotics when confounding factors are considered. That broader evidence is reassuring, but it is not the same as having strong Rexulti-specific pregnancy studies.
In plain English: research on the medication class is helpful, but Rexulti is still a newer drug compared with older antipsychotics such as haloperidol, quetiapine, olanzapine, and risperidone. Your clinician may consider whether staying on Rexulti is better than switching, especially if Rexulti is the medication that finally helped you function, sleep, work, parent, or simply get through Tuesday without your brain staging a protest.
Why You Should Not Stop Rexulti Suddenly
It can be tempting to stop medication the moment a pregnancy test turns positive. That reaction is understandable, but it can backfire. Abruptly stopping Rexulti may increase the risk of relapse, worsening depression, psychosis, mania, agitation, insomnia, anxiety, or suicidal thoughts, depending on why it was prescribed.
Untreated or undertreated mental illness during pregnancy is not harmless. Severe depression can interfere with nutrition, sleep, prenatal visits, bonding, and safety. Schizophrenia or bipolar-spectrum symptoms can make pregnancy care more difficult and may increase the risk of crisis, hospitalization, or postpartum complications. ACOG guidance emphasizes that mental health medications should not be automatically withheld or discontinued solely because someone is pregnant or breastfeeding.
If you and your doctor decide Rexulti is not the best option during pregnancy, the plan may involve tapering, switching to a better-studied medication, adding psychotherapy, increasing monitoring, or adjusting other parts of treatment. The key word is plan. Pregnancy is not the ideal season for medication chaos.
Rexulti in the First, Second, and Third Trimester
First Trimester
The first trimester is when many major organs develop, so medication exposure during this period gets extra attention. There is not enough Rexulti-specific human data to say whether first-trimester exposure raises the risk of birth defects. If you discover you were taking Rexulti before you knew you were pregnant, do not panic. Many people take medications before realizing they are pregnant. Call your healthcare provider promptly and ask what monitoring or medication review is appropriate.
Second Trimester
During the second trimester, your clinician may focus on symptom control, fetal growth, weight changes, blood sugar, sleep, and overall stability. Some antipsychotic medications are associated with metabolic effects such as weight gain or blood sugar changes, so standard prenatal screening for gestational diabetes remains important.
Third Trimester
The third trimester is the period most clearly highlighted in Rexulti safety information because antipsychotic exposure near delivery may lead to newborn movement or withdrawal symptoms. If Rexulti is continued late in pregnancy, your obstetric and pediatric teams should know before delivery so the baby can be monitored for feeding, breathing, sleepiness, muscle tone, and unusual movements.
Pregnancy Registry: Why It Matters
People exposed to Rexulti during pregnancy may be encouraged to enroll in the National Pregnancy Registry for Psychiatric Medications. Pregnancy registries collect information from people who took certain medications while pregnant. This helps researchers understand medication safety more clearly over time.
Registry participation does not mean something is wrong. It is more like contributing a puzzle piece to a picture that doctors badly need to complete. Because pregnant people are usually excluded from traditional drug trials, registries are one of the best ways to learn what really happens when medications are used in the real world.
Can You Take Rexulti While Breastfeeding?
Breastfeeding while taking Rexulti is another gray area. The official prescribing information states that lactation studies have not fully established whether brexpiprazole is present in human milk, how it may affect a breastfed infant, or how it may affect milk production. However, newer lactation data and case reports suggest that small amounts may pass into breast milk.
LactMed reports preliminary information indicating that brexpiprazole in milk has not been shown to harm infant growth and development in the small number of available cases. Still, it may reduce milk supply in some people. This matters because a medication can be “low in milk” and still create a practical breastfeeding challenge if it interferes with lactation.
Possible Effects on Milk Supply
Brexpiprazole may affect prolactin, a hormone involved in milk production. A case report described low milk production in a person taking brexpiprazole postpartum, with milk supply improving after the medication was stopped. This does not prove the same thing will happen to everyone, but it is a signal worth taking seriously.
If you breastfeed while taking Rexulti, your healthcare team may recommend tracking the baby’s weight gain, wet diapers, feeding satisfaction, sleepiness, and developmental progress. A lactation consultant can also help determine whether low supply is related to latch, pumping schedule, delivery factors, infant oral anatomy, retained placenta, thyroid issues, medications, or the all-purpose chaos goblin known as postpartum exhaustion.
When an Alternative May Be Considered
Some clinicians may prefer an antipsychotic with more breastfeeding data, especially for a newborn, premature infant, or medically fragile baby. LactMed lists alternatives that may be considered, including haloperidol, olanzapine, quetiapine, and risperidone. But “more data” does not always mean “better for you.” If Rexulti is the only medication that has kept symptoms controlled, switching could create its own risks.
Questions to Ask Your Doctor
Before deciding whether to continue Rexulti while pregnant or breastfeeding, ask practical questions. What condition is Rexulti treating? How severe were symptoms before Rexulti? Have other medications worked? What happened when medication was stopped in the past? Are there safer or better-studied alternatives for your situation? What monitoring is needed for you and the baby? Who should be contacted if symptoms worsen?
You may also want to ask whether your dose is the lowest effective dose, whether any drug interactions could raise Rexulti levels, and whether your delivery team should prepare for newborn monitoring. If breastfeeding, ask how often the baby’s weight should be checked and what signs should prompt a call to the pediatrician.
Possible Monitoring During Pregnancy
If Rexulti is continued, monitoring may include mood and symptom check-ins, blood pressure, weight, blood sugar screening, assessment for movement-related side effects, sleep quality, and medication interaction review. Your obstetrician may follow standard prenatal testing and add extra monitoring based on your personal history.
Patients with diabetes, gestational diabetes risk, rapid weight gain, severe nausea, sleep deprivation, or worsening psychiatric symptoms may need closer follow-up. The goal is not to make pregnancy feel like a full-time medical internship. The goal is to catch problems early while keeping both parent and baby as healthy as possible.
Risk-Benefit Decision: What It Really Means
Doctors often say “risk-benefit decision,” which can sound like they are hiding behind a clipboard. But the phrase matters. The risk of taking Rexulti must be compared with the risk of not treating the condition. For one person, mild symptoms and strong nonmedication supports may make tapering reasonable. For another, a history of hospitalization, psychosis, severe depression, or postpartum relapse may make continuation the safer path.
A good decision considers the medication, the dose, trimester, diagnosis, past relapse history, support system, sleep, safety, breastfeeding goals, and how quickly help is available if symptoms return. There is no universal answer that fits everyone. Pregnancy is personal; medication planning should be too.
Real-World Experiences and Practical Lessons
Many people facing this decision describe the same emotional tug-of-war: they want to protect the baby, but they also know their mental health is part of the baby’s environment. One common experience is guilt. A pregnant person may think, “If I take medication, am I being selfish?” In reality, staying mentally stable can be one of the most protective things a parent does. Eating regularly, sleeping, attending appointments, avoiding crisis, and staying connected to care all matter.
Another common experience is fear after reading medication warnings online. Safety language can be intense because labels must describe possible risks, even when those risks are rare or based on limited data. A warning is not a prediction. It is a signal to plan carefully. For example, the third-trimester warning about newborn symptoms does not mean every exposed baby will have problems. It means the delivery and pediatric teams should know about exposure so they can monitor the newborn appropriately.
Some people find out they are pregnant while already taking Rexulti. In that moment, the best first step is usually not panic-stopping the medication, but calling the prescribing clinician and obstetrician. A practical plan might include reviewing the dose, discussing the timing of exposure, checking other medications, scheduling prenatal care, and deciding whether to continue, taper, or switch. That conversation can feel awkward, but clinicians have heard it before. You are not the first person to bring a medication question with shaky hands and a search history that looks like a raccoon typed it at 2 a.m.
Breastfeeding experiences can vary too. Some parents taking Rexulti may notice no obvious infant side effects, while others may struggle with low milk supply and wonder whether the medication is contributing. Because postpartum milk production is affected by many factors, it helps to track objective signs: diaper counts, infant weight checks, pumping output, feeding duration, and whether the baby seems satisfied after feeds. A pediatrician and lactation consultant can help separate medication concerns from common breastfeeding hurdles.
Partners and family members can play an important role. They can watch for warning signs such as severe insomnia, racing thoughts, paranoia, hallucinations, deepening depression, panic, withdrawal from care, or thoughts of self-harm. They can also help protect sleep, which is not glamorous but is basically medicine with pajamas. For people with a history of severe mood episodes or psychosis, a postpartum plan should be made before delivery, not after everyone is home, overwhelmed, and trying to assemble a breast pump like it came from NASA.
The most helpful experience many patients report is shared decision-making. They feel better when their psychiatrist, OB-GYN, and pediatrician are on the same page. They feel less alone when someone explains the actual risks instead of simply saying, “Do not take anything,” or “It is probably fine.” The best plan is usually specific: what medication, what dose, what monitoring, what emergency steps, what feeding plan, and what support is available after birth.
Conclusion
So, can you take Rexulti while pregnant or breastfeeding? Possibly, but it should never be a casual decision. Rexulti has limited pregnancy and lactation data, and third-trimester exposure to antipsychotics may cause newborn movement or withdrawal symptoms that require monitoring. During breastfeeding, early information suggests infant exposure through milk may be low, but Rexulti may reduce milk supply in some people.
The safest path is a personalized plan with your healthcare team. Do not stop Rexulti suddenly without medical guidance. Instead, discuss your diagnosis, relapse history, dose, pregnancy stage, breastfeeding goals, and available alternatives. A healthy pregnancy is not only about avoiding exposures; it is also about keeping the parent stable, supported, and well enough to care for themselves and the baby.
