Medication Safety During Pregnancy: Understanding the Risks and Benefits

Pregnancy is an especially vulnerable time for mental health challenges. Physical changes, shifting hormones, financial pressures, and new responsibilities can all take a toll. For women managing mental health conditions, one of the biggest concerns is often about medication: Is it safe for my baby?

This is an important question that deserves a thorough, evidence-based answer.

How We Assess Medication Safety

The way we evaluate medication safety during pregnancy has improved significantly. The FDA previously used a letter system (A, B, C, D, X) to rate medications, but this system was often confusing and didn't provide enough detail. A medication with limited research data could receive a safer rating than a well-studied medication that showed a small risk. In 2015, the FDA introduced new Pregnancy and Lactation Labeling Rules that give more complete information about the actual risks and benefits of taking medications during pregnancy and while breastfeeding.

What Are the Risks of Taking Medication?

Psychiatric medications do carry some risks during pregnancy. The most common concerns include preterm birth (delivering before 37 weeks), neonatal adaptation syndrome (temporary symptoms in newborns as they adjust after birth), and low birth weight. More serious but less common risks include birth defects or physical abnormalities.

Here's important context: even without any medication exposure, 2-4% of all babies born in the U.S. have a major birth defect. Birth defects typically happen during the first trimester when the baby's organs are forming, which makes this time period especially important to consider when making decisions about medication.

Not all psychiatric medications carry the same level of risk. For example, among antidepressants called SSRIs, the medication Paroxetine has been shown to increase the risk of heart defects more than other options in this class. This is why the specific medication matters, not just the type of medication, and why working closely with your doctor is so important.

The Other Side: Risks of Untreated Mental Illness

What many people don't realize is that untreated depression and anxiety during pregnancy also carry significant risks. Research shows clear connections between untreated mental health conditions and problems during pregnancy.

Women struggling with untreated psychiatric conditions during pregnancy are less likely to get adequate prenatal care. They're also more likely to use alcohol, tobacco, or other substances that can harm pregnancy outcomes. Studies have found that babies born to mothers with untreated depression are more likely to have low birth weight and growth problems. Preterm delivery is also more common among women experiencing significant distress during pregnancy.

Untreated mental health conditions in late pregnancy have been linked to other serious complications, including pre-eclampsia (a dangerous rise in blood pressure), higher rates of C-sections, and babies needing admission to special care nurseries for issues like breathing problems, low blood sugar, and prematurity.

Postpartum, untreated depression and anxiety can impair parent’s ability to bond and react

Making the Right Decision for You

These findings highlight why it's so important to look at the complete picture. When deciding about medication during pregnancy, you and your healthcare team need to consider:

• The risks of taking medication

• The risks of untreated mental illness to both you and your baby

• How severe your condition is

• Your personal treatment history and what has worked for you

For many women, the risks of untreated mental illness actually outweigh the risks of carefully chosen medication. There is no one-size-fits-all answer—the right decision depends on your individual situation.

If you're pregnant or planning to become pregnant while managing a mental health condition, talk openly with both your psychiatrist and your obstetrician. Together, you can develop a treatment plan that protects your health and your baby's health. You deserve support in making this decision, and you don't have to navigate it alone.