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Baclofen does not have an official pregnancy rating in the United States. It is rated B3 in Australia. In Australia, that rating indicates that baclofen has only been given to a limited number of expectant mothers, but there were no signs of harmful effects.  Due to the mother taking oral baclofen some studies show that babies may experience withdrawal symptoms like a hard time learning to feed, tremors, seizures, and other side effects. (data is limited)

Animal testing for baclofen and pregnancy has shown that it can affect a developing fetus. It should only be taken during pregnancy if the benefit clearly justifies the risk.

Baclofen and Breastfeeding

Limited tests show that baclofen is excreted in breastmilk, but it does not appear to cause problems for the infant, although there isn’t much data to prove whether it’s a problem or not. 

It is possible that an infant exposed to baclofen through breast milk might develop withdrawal symptoms. Withdrawal symptoms can include hyperthermia and hallucinations. For this reason, it is better for nursing moms to avoid taking baclofen. Always talk to your doctor about the potential risks of taking baclofen both during and after pregnancy.


Can you take muscle relaxers while being pregnant?

Typically, muscle relaxers should only be used if absolutely necessary during pregnancy. Talk to your doctor for more information.

Can muscle relaxers cause miscarriage?

There is not enough evidence to say that muscle relaxers can cause a miscarriage. 

What pregnancy category is baclofen? 

Baclofen is not categorized for pregnancy in the U.S.

Is baclofen safe during pregnancy?

There are no studies to indicate whether or not this drug is safe to take while pregnant. Animal studies have shown it can affect a developing fetus. It is critical to talk with your doctor about the potential risks of taking baclofen during pregnancy. They will be able to provide more personalized information and medical advice.

Are muscle relaxers safe while breastfeeding?

There are a few tests that indicate whether muscle relaxers are safe for nursing mothers. Cyclobenzaprine (Flexeril) is excreted in breast milk but well tolerated by infants.

Disclaimer: this article does not constitute or replace medical advice. If you have an emergency or a serious medical question, please contact a medical professional or call 911 immediately. To see our full medical disclaimer, visit our Terms of Use page.

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