Gabapentin is not considered clearly safe during pregnancy, but it is not strictly off-limits either. The decision depends on why you’re taking it, how severe your condition is, and whether safer alternatives exist. Unlike some anti-seizure medications that carry well-established risks of birth defects, gabapentin’s profile is murkier: the available evidence points to modest increases in certain pregnancy complications rather than dramatic harm, but the data is still limited.
What the Evidence Shows About Risk
Gabapentin does not carry a simple letter-grade safety rating. The FDA replaced its old A-through-X pregnancy categories with a more detailed labeling system that describes actual evidence rather than assigning a single letter. That means there’s no quick “safe” or “unsafe” stamp for gabapentin. Instead, the risks have to be weighed based on the studies that exist.
The largest study on gabapentin in pregnancy, drawn from the U.S. Medicaid database, found that women who took gabapentin had a higher rate of preterm birth and were more likely to deliver babies that were small for gestational age. Specifically, exposure later in pregnancy raised the risk of preterm birth by about 28%, and exposure throughout pregnancy raised it by about 22%. Babies were also more likely to measure small for their gestational age regardless of when the exposure occurred. A 2024 systematic review confirmed these patterns, also noting higher rates of preeclampsia and neonatal intensive care admissions among gabapentin users.
These are relative increases, meaning they describe how much higher the risk is compared to women not taking the drug. The absolute numbers matter too: most women who took gabapentin still delivered healthy, full-term babies. But the trend is consistent enough across studies to take seriously.
Birth Defects and Neurodevelopment
One of the biggest concerns with any medication during pregnancy is whether it causes structural birth defects. For gabapentin, the evidence here is more reassuring than for some other anti-seizure drugs. It has not been linked to the same kinds of major malformations seen with valproic acid, which is known to cause neural tube defects and other serious problems.
Long-term brain development is harder to study, but a large French population-based study followed children for up to six years after prenatal exposure. Compared to lamotrigine (one of the most commonly used and best-studied anti-seizure medications in pregnancy), gabapentin showed no increased risk of neurodevelopmental disorders, autism spectrum conditions, intellectual disability, or early need for speech therapy. The study did acknowledge its follow-up period was limited, so only earlier and potentially more severe diagnoses would have been captured. Still, the absence of a signal is encouraging, especially when contrasted with valproic acid, which showed clear neurodevelopmental harm in the same study.
Why You’re Taking It Matters
The risk-benefit calculation looks very different depending on your diagnosis. If you take gabapentin for epilepsy, stopping it could mean uncontrolled seizures, which pose their own serious risks to both you and a developing baby. Seizures during pregnancy can cause oxygen deprivation, physical injury, and pregnancy loss. The American College of Obstetricians and Gynecologists recommends that women with seizure disorders consult a neurologist before or early in pregnancy to optimize their medication, choosing options with the lowest known risk while still controlling seizures effectively.
If you take gabapentin for nerve pain, anxiety, or off-label uses, the equation shifts. These conditions are real and sometimes debilitating, but there may be non-medication approaches or alternative treatments that carry less uncertainty during pregnancy. The key question your prescriber will consider is whether the benefit of continuing gabapentin outweighs the potential risks, and whether something else could work in its place for the duration of your pregnancy.
Stopping Gabapentin Safely
If you and your provider decide to discontinue gabapentin, tapering is important. Stopping abruptly can trigger withdrawal symptoms including anxiety, insomnia, nausea, sweating, and in people with epilepsy, rebound seizures. A gradual dose reduction over one to two weeks is typical, though the exact timeline depends on your dose and how long you’ve been taking it.
If you discover you’re pregnant while already on gabapentin, don’t stop taking it on your own. The risks of abrupt withdrawal, particularly seizures, can be more immediately dangerous than continued use. Contact your prescriber so you can make a plan together.
Gabapentin and Breastfeeding
Gabapentin does pass into breast milk, but in small amounts. Studies of mature breast milk estimate the relative infant dose at roughly 1% to 3% of the mother’s dose, which is well below the 10% threshold generally considered concerning. A study specifically looking at women who received gabapentin after cesarean delivery found even lower transfer rates in the first 48 hours postpartum, with relative infant doses below 0.15%. The milk-to-plasma ratio is about 0.4, meaning breast milk contains less than half the concentration found in the mother’s blood.
These numbers suggest that breastfeeding while taking gabapentin exposes the infant to very small amounts of the drug. Most clinical references consider gabapentin compatible with breastfeeding, though monitoring the infant for unusual drowsiness or poor feeding is reasonable.