Is Botox safe during pregnancy?

What does the evidence say about Botox during pregnancy?

1. The official Botox prescribing label still carries a caution based only on animal studies, not on research in pregnant people, and that gap is a big reason providers default to waiting. 1
2. Botox stays local at the injection site instead of spreading through your bloodstream, which is a major reason researchers don't expect it to raise the risk of birth defects. 2
3. The largest safety tracking effort so far followed more than 900 Botox-exposed pregnancies, and the rate of major birth defects among babies born was actually lower than the typical background rate, though the researchers point out this data comes from voluntary safety reports rather than a controlled study. 3
4. Botox molecules are considered too large to cross the placenta when it's injected correctly, which helps explain why a review of dozens of pregnancy cases hasn't turned up fetal harm. 4
5. A small real-world study followed 45 pregnancies in women who were receiving Botox for migraines and found healthy, full-term babies in nearly every case, though the researchers were upfront that their group was too small to prove safety. 5

Is Botox safe in each trimester?

• First trimester. A lot of people don't realize they're pregnant until after a Botox appointment is already on the calendar or done. Case reports on that kind of early, accidental exposure haven't shown a higher rate of miscarriage or birth defects, but most providers still recommend pausing any Botox once you get a positive test.
• Second trimester. There still isn't research showing it's fine to start or continue Botox in the second trimester, so the guidance doesn't really change. Most clinicians ask patients to hold off on new cosmetic appointments until after the baby arrives.
• Third trimester. The same wait-and-see approach carries into the third trimester. If you're using Botox for a medical reason like chronic migraines, loop in both your OB and the prescribing specialist so they can weigh it together instead of you deciding alone.