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7 Antidepressants During Lactation
Comments on
usage during
breastfeeding
Possible with
caution
main recommendations
®
not be expected to cause any adverse
effects in breastfed infants. If zuranolone
is required by the mother, it is not a
reason to discontinue breastfeeding.
Monitor infants for excessive sedation
(especially with higher dosages and in
newborns and preterm infants)
Safety
prole LactMed
159
Total
0–10
F
0–1
E
0–2
D
0–1
C
0–1
B
0–2
A
0–2
Safety scores
Adverse
reactions
in infants
Maximum
reported
RID
Antidepressant
class and drug
Zuranolone 0.74% ND 1 2 0.5 0 0 0 3.5 Low Low amounts in milk; zuranolone would
ND no data, RID relative infant dose
160
P. Desaunay et al.

7.5 Conclusion

Pregnant and postpartum women using ADs should benet from additional support to achieve optimal breastfeeding initiation and duration. All ADs evaluated in this review can be prescribed to nursing mothers, with sertraline and paroxetine recommended as rst-line options and others to be considered on a case-by-case basis. Regardless of the AD used, breastfed infants should be monitored closely, including for weight gain and neurodevelopment. Finally, larger, methodologically robust safety studies are required to better understand the implications of AD use during breastfeeding.

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Antipsychotics inPregnancy
CarolynBreadon andJayashriKulkarni

8.1 Introduction

The changing patterns of antipsychotic medication use over the past 20years have resulted in a dramatic shift in the typical prole of the pregnant woman taking these medications. Several decades ago, the use of rst-generation antipsychotic medica­tion was restricted largely to the treatment of women suffering schizophrenia and schizophrenia spectrum disorders. In more recent times the use of second- generation antipsychotic medications has exploded, especially in North America, to treat patients with mood disorders (including bipolar disorders and major depressive dis­orders), anxiety spectrum disorders (including PTSD and OCD), ADHD, tic disor­ders, personality disorders, and intellectual disability and developmental spectrum disorders.
Additionally, the use of rst-generation antipsychotics in the past may have had the effect of reducing women’s fertility through elevated prolactin, effectively arresting the cycle of ovulation. Second-generation antipsychotics do not have this tendency to the same degree, though case reports and clinical experience suggest that individual women may be sensitive to this effect even when taking medications not traditionally considered to be highly active at D2-receptors, such as olanzapine and quetiapine. Hence women taking antipsychotic medication are more numerous, more fertile, and suffer a greater variety of underlying conditions which result in their use of antipsychotic medications in the contemporary era. These women could be encountered in any area of psychiatric practice.
Teratogenic risks of medications are traditionally considered to be at their high­est in the rst trimester of pregnancy, when women are often not aware that they are pregnant. This means that the care of every woman of childbearing age should
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C. Breadon · J. Kulkarni (*) Monash Alfred Psychiatry Research Centre, Monash University, Melbourne, VIC, Australia e-mail: jayashri.kulkarni@monash.edu
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2025 F. Uguz, L. Orsolini (eds.), Perinatal Psychopharmacology,
https://doi.org/10.1007/978-3-031-99720-4_8
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incorporate a consideration of the risks of medication prescribed to a potential unborn child, and psychiatrists must be aware of these risks and communicate them clearly to their patients.
Once a woman is aware she is pregnant her next consideration is a decision about the continuation of pregnancy. For this phase of care a woman must be aware of the risks both to herself in continuing to take a medication throughout pregnancy which may affect her physical health and her experience of delivery, and the risks to her child of congenital defects, adverse events at birth, or of later neurodevelopmen­tal delay.
Again, it is the role of her psychiatrist to inform her of the risks of treatment to her and her baby, balanced against the risks of untreated illness including relapse in pregnancy or the postpartum. Women taking antipsychotic medications in preg­nancy may be more vulnerable to metabolic effects including high rates of weight gain and gestational diabetes, particularly those taking second-generation antipsy­chotics. Both weight gain and gestational diabetes have implications for delivery and neonatal outcomes.
Increasing evidence suggests that most antipsychotic medications do not confer a greatly increased risk of congenital malformations. However, babies may experi­ence neonatal respiratory difculties and medication withdrawal symptoms at deliv­ery, suggesting that a neonatal ICU or special care nursery should be available. Available data on neurocognitive development of babies exposed to antipsychotics in pregnancy seems to suggest that at 1year there are no developmental distinctions between these babies and their peers.
Emerging evidence relating to risks of neurodevelopmental delay, autism spec­trum disorder and attention decit-hyperactivity disorder in babies of women treated with antipsychotic medications seems to indicate that babies born to women with a broad range of mental health disorders may be at higher risk of developing these conditions, and that treatment with antipsychotic medication in pregnancy probably does not further elevate these risks.
This chapter aims to provide a concise up-to-date summary of the known risks associated with antipsychotic medication treatment in pregnancy, to aid clinicians in providing best practice care to their patient (and by extension, to their patient’s family).
C. Breadon and J. Kulkarni
8.2 The True Cost ofRelapse inPregnancy
andthePostpartum
Women who are prescribed antipsychotic medications face a decision point when they discover they are pregnant. Anecdotally, many women cease all medications at this point. Recent evidence suggests that this is also true for women taking antipsy­chotic medications (Petersen etal. 2014). However, this decision can have serious consequences for the mother and also for her unborn or newborn child. Elsewhere, researchers have examined the dollar cost of a relapse of psychosis (Hong etal.
2009). This can’t begin to encompass the multiple problems associated with a
relapse of psychosis for the individual and society more broadly in terms of
8 Antipsychotics inPregnancy
nancial, interpersonal, occupational, and psychological costs. These costs are magnied and other risks are added in the context of pregnancy and childbirth. In clinical experience, treating a pregnant woman with psychosis in a general psychi­atric inpatient unit provokes anxiety and distress for everyone involved in the wom­an’s care, including the woman herself and her family. The risks are evident: fragmented antenatal care, poor attention to nutrition, itinerancy or homelessness, with all the risks to physical safety and health that these situations entail, including the need to commence higher doses of medication in hospital to establish, rather than maintain, a stable mental state.
It has been well established that women are at greater risk of relapse of mood disorders in pregnancy and in the postpartum, when this can manifest as postpartum psychosis. Women with a history of bipolar disorder who are untreated in pregnancy face a very high risk of relapse (Bergink etal. 2012). In the postpartum this relapse carries the added risks of suicide and infanticide (Wisner etal. 2002), alongside the more subtle risks to attachment security and bonding which could occur through separation of mother and baby (Howard 2000) or through the difculties associated with bonding and psychosis (Howard 2000).
Women living with schizophrenia are perhaps uniquely vulnerable when faced with the challenges of parenting (Hipwell etal. 1996), especially when allied with other factors related to mental illness such as poor social support and economic disadvantage (Göpfert etal. 1996). Howard et al. (2004a) lists the potential pitfalls for these women as follows: “Psychotic symptoms may affect the mother-infant relationship through involvement of the child in delusions, hallucinations or passiv­ity experiences, by making the mother unavailable, or through the absence of desir­able behaviours resulting in an impoverished environment for the child.” These authors examined outcomes for unwell women with psychosis admitted to mother and baby units in the UK, and advocated for early treatment of psychosis in averting parenting orders and family separation (Howard et al. 2004a).
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8.3 Evaluating theTrue Risks toWomen andTheir Babies
fromTreatment withAntipsychotic Medication inPregnancy
The challenge in correctly identifying the true risk to a woman and her baby from treatment lies in unravelling the risks conferred by a medication from the risks asso­ciated with having a serious mental illness. A woman living with schizophrenia or bipolar disorder may have genetic vulnerabilities shared by her child, and may also have multiple vulnerabilities and disadvantages arising from the nancial, social, and occupational costs of living with a major mental illness. Taylor etal. (2015) succinctly summarised the current state of research into confounding factors, writ­ing “..the prevalence of these modiable risk factors in these women is unclear as most studies have used clinical data from specialist services with limited generalis­ability, or have small clinical samples with limited statistical power to investigate differences between the groups, or have used administrative data of population cohorts with little detail on clinical characteristics.” In reality, the eld of perinatal