Can you take Wegovy while breastfeeding?

If you’re wondering whether you can take Wegovy (semaglutide) while breastfeeding, you’re not alone. 

The postpartum period is a time of major physical recovery and adjustment, and body changes during this stage can be both emotionally and physically challenging — weight loss may be slower than you'd like.

If you’re considering Wegovy for postpartum weight loss, it's important to know that the safety guidance differs depending on which form of Wegovy you use. Here, we’ll break down what’s currently understood about Wegovy and breastfeeding so you can make an informed decision with your healthcare provider. 

It depends on the formulation. The Wegovy injection has not been well studied during breastfeeding, but the U.S. Food and Drug Administration (FDA) does not specifically recommend against using it. The decision should be made on an individual basis with your healthcare provider weighing the benefits of breastfeeding against the benefits of treatment.

The oral Wegovy tablet, however, is not recommended during breastfeeding because of an ingredient called SNAC.

Here is what we currently know: A clinical study of the oral Wegovy tablet found that semaglutide itself was essentially undetectable in breast milk (below the lower limit of quantification). However, SNAC, which is an absorption-enhancing ingredient found only in the oral tablet, does pass into breast milk. Because infants may not be able to clear SNAC from their bodies as efficiently as adults, there is concern it could build up to higher levels in nursing infants. For this reason, the FDA recommends against breastfeeding while taking the oral tablet and notes that the injection (which does not contain SNAC) should be considered instead. 

For the Wegovy injection, there is not enough data to determine whether it passes into breast milk or how it might affect a nursing infant. Animal studies have shown that semaglutide can pass into breast milk in rats, though whether those findings translate to humans is not yet known. Additionally, breastfeeding requires extra calories to support milk production. Semaglutide reduces appetite and overall calorie intake, which may make it harder to meet those demands, though research has not specifically demonstrated an effect on milk supply.

Pregnant and breastfeeding parents and infants are rarely included in clinical trials for ethical reasons, leaving a significant gap in research. If you are considering Wegovy while breastfeeding, talk to your healthcare provider about whether the injectable formulation may be appropriate for you. 

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Wegovy pill vs. pen and breastfeeding

There is one important difference between the Wegovy pill and injection pen when it comes to breastfeeding.

The Wegovy pill contains salcaprozate sodium (SNAC), an ingredient that helps the medication get absorbed by the body. SNAC has been shown to pass into breast milk, and because infants may not be able to clear it from their bodies as efficiently as adults, there is concern it could accumulate at higher levels. For this reason, the FDA advises against breastfeeding while taking the Wegovy pill.

The Wegovy injection pen does not contain SNAC. There is still limited information on whether injectable Wegovy passes into breast milk, but the FDA does not recommend against its use during breastfeeding. The decision should be made in consultation with a healthcare provider, weighing the benefits of breastfeeding against those of treatment.

There is no clear evidence that Wegovy passes into human breast milk in significant amounts — but there is not enough research to confirm that it does not.

While the data we have so far is limited , here’s what we do know. 

In a small 2024 study, researchers looked at breast milk samples from eight breastfeeding mothers who were taking injectable semaglutide. Semaglutide was not detected in any of the milk samples collected during the study period, and the infants generally appeared to grow normally. 

One mother reported diarrhea and reduced appetite in their baby — both common side effects of semaglutide — though no growth issues were noted. The study was very small, the mothers were on a low dose, and the babies were also eating solids; results may have differed in exclusively breastfed infants.

Animal studies have also shown that semaglutide can pass into breast milk in rats, but whether those findings translate to humans — or what the long-term effects could be — remains unknown.

There is currently no research that has directly studied whether Wegovy affects breast milk supply, though it is plausible that it could.

According to the Centers for Disease Control and Prevention (CDC), nursing parents may need an additional 330–400 calories per day. Semaglutide — the active ingredient in Wegovy — is known to reduce appetite, increase feelings of fullness, and lower overall calorie intake. Taking Wegovy while breastfeeding could therefore make it harder to meet the increased nutritional demands of both lactation and postpartum recovery.

Despite what is often assumed, breastfeeding doesn't guarantee easy postpartum weight loss — and for some people, weight loss may be minimal until after weaning.

Here are some strategies to support postpartum weight management.

Don't rush it

The American College of Obstetricians and Gynecologists (ACOG) recommends aiming to return to your pre-pregnancy weight within six to 12 months of giving birth. This is a guideline, not a deadline — and returning to the exact pre-pregnancy weight may not be realistic for everyone, and that is perfectly fine.

Aim for a moderate calorie deficit

Calorie needs during breastfeeding are higher — an extra 300–500 calories a day is generally needed to maintain milk supply (depending on how long you have been breastfeeding) — so cutting too drastically can work against both weight loss and milk production. A modest deficit of around 500 calories is generally considered a safe degree of calorie restriction.

Prioritize protein and fiber

Research suggests that protein and fiber can help people feel fuller between meals, which may reduce snacking and support overall calorie balance.

Drink enough water

Breastfeeding people are encouraged to consume 3,800 mL of total water per day. This figure includes water from food and other beverages, not just drinking water.

Water is essential for milk production, and drinking water instead of high-calorie beverages may also support weight management.

Increase movement

Low-impact activities such as walking and yoga are good starting points, along with gentle core-strengthening work. Long walks count, and a baby in a carrier adds some extra resistance — similar to wearing a weighted vest. The general guideline is to gradually work toward 150 minutes per week of moderate-intensity aerobic exercise. Strenuous activity should be avoided until the individual feels physically ready. 

Prioritize sleep when possible

Some research suggests that even a single night of poor sleep can raise levels of ghrelin — the hormone that signals hunger — while lowering leptin, the hormone that signals fullness, making it harder to avoid snacking or overeating. Napping when possible, taking turns with night feeds, and prioritizing rest are all worthwhile strategies.

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When it comes to Wegovy and breastfeeding, the available data remain limited — and that uncertainty is why experts advise caution.

• Researchers don’t yet know whether the Wegovy injection passes into breast milk or how it might affect a breastfed baby. If you’re breastfeeding, talk with your healthcare provider about the potential risks and benefits before using it.

• For the Wegovy pill, the FDA recommends not breastfeeding during treatment because one of its ingredients can pass into breast milk.

• There’s also some concern that Wegovy’s appetite-suppressing effects could make it harder to get the extra calories needed while breastfeeding, although studies have not shown that it reduces milk supply.

• Safe, effective postpartum weight management is possible without medication. A modest calorie deficit, prioritizing protein and fiber, low-impact movement, and adequate sleep are all worthwhile strategies.

• Talk to a healthcare provider before starting any postpartum weight management plan.