Probiotics For Breastfeeding: Safety, Benefits And Side Effects

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Probiotics are living microorganisms similar to healthy bacteria normally present in the human gut. These microorganisms have several health benefits and therefore have become a popular dietary supplement in recent times. However, the health benefits of probiotics for breastfeeding mothers and their babies are yet to be explored and established. So, can breastfeeding mothers add probiotics to their regular diet? We have compiled information about the safety, facts, health benefits, side effects, and natural sources of probiotics for breastfeeding mothers. Read on to know more.

Are Probiotics Safe When Breastfeeding?

Probiotics are safe to take when breastfeeding. When used orally or as a vaginal suppository, they are generally well-tolerated and are considered safe (1). Research suggests that their persistent use could enhance the immunoprotective potential of breast milk (2). However, you need to talk to a doctor or lactation expert before taking any supplements when breastfeeding

Important Facts About Probiotics When Breastfeeding

  1. Human milk is a natural source of probiotics for infants. Research shows that human milk has 700 different types of bacteria, including probiotic strains such as Lactobacillus, Streptococcus, Staphylococcus, and Bifidobacterium (3).
  1. The intake of probiotic supplements by a mother can affect the probiotic composition of breast milk. However, they do not pass to an infant directly via breast milk (1) (4).
  1. Probiotics are available in the form of dietary supplements and foods prepared by bacterial fermentation. Some commercially available probiotics products are broad-spectrum, i.e., these products have different probiotics in the same product.
  1. The most widely used probiotics are live bacteria such as Lactobacillus and Bifidobacterium. However, some strains of fungi are also probiotic, such as Saccharomyces boulardi, which is a type of yeast (5).

Possible Health Benefits of Probiotics When Breastfeeding

There could be several combined benefits for you and your baby by consuming probiotics when breastfeeding.

Mutual Benefits

These benefits come to the mother and could also impact the baby through breast milk.

  1. Digestive health: The probiotic use has proved effective in several gastrointestinal issues, such as antibiotic-associated diarrhea and inflammatory bowel disease, (6). Therefore, the regular use of probiotics could keep the mother’s digestive processes healthy. A robust GI tract ensures better absorption of food nutrients (7), and their optimum transfer to the baby through breast milk.
  1. Immunity: Probiotics have shown to impact the innate immunity of the host (8). Enhanced innate immunity plays a crucial role in managing or preventing autoimmune conditions (9). Mothers who consume probiotics are likely to confer these advantages to their babies as well. For example, a study noted that maternal probiotic consumption had an immunomodulatory effect on breast milk. It ultimately reduced the risk of atopic eczema in the breastfed infants during the first two years of life (2).

Benefits For Mothers

  1. Urinary tract infections: Some studies note that the vaginal use of probiotics could mitigate the chances of urinary tract infections (UTIs), including those caused by yeasts (10). However, more research is needed to establish probiotics as a valid treatment for UTIs (11).
  1. Nausea: A few research studies have promoted the use of probiotics to manage and treat nausea caused by lower GI tract ailments (12).
  1. Mood and cognitive function: Research suggests that the regular use of probiotics might help improve mood and cognitive function by lowering stress and anxiety (13).
  1. Help lose weight and belly fat: Certain research studies show that probiotics can potentially help in losing weight and belly fat. They might reduce fat absorption in the small intestine or might make you feel full for longer, thus reducing food intake (14) (15).
  1. Lactose intolerance: Some strains of probiotic bacteria could improve lactose metabolism, thus helping mothers with lactose intolerance (16).
  1. Healthy heart: Probiotics are associated with enhanced heart health and probable prevention of coronary heart diseases. It reduces serum cholesterol levels by interfering with cholesterol absorption in the gut. Probiotics also display antihypertensive effects, which allows for blood pressure control (16).
  1. Inflammation: Various scientific research studies show that the regular use of probiotics has the potential to lower inflammation (17).

Possible Side Effects Of Probiotics While Breastfeeding

In the US, probiotics are sold as dietary supplements. They do not undergo the FDA’s stringent testing and approval process mandatory for the regular drugs. (18). Therefore, you need to be extra careful and cognizant of the likely side effects of probiotics (5) (19).

  1. Mild gastrointestinal issues: You may experience bloating, diarrhea, or stomach cramps initially when consuming probiotic supplements. If the problems persist, then switch to another probiotic or consult your doctor.
  1. Contamination: There have been cases where probiotic supplements were contaminated by potentially harmful fungi and bacteria. Therefore, only buy probiotic supplements made by trusted manufacturers and sold by authorized retailers.
  1. Infections: Probiotics might lead to infections in people with suppressed immunity, like those with AIDS or those on some medications.
  1. Allergies: Probiotic supplements could contain allergens, such as lactose, soy, or prebiotic fibers that may cause adverse reactions in some people. Read the labels carefully before you purchase any over-the-counter probiotics.
  1. Other reactions: Some other possible side effects of probiotic use include infections, production of harmful substances by the probiotic microorganisms, and transfer of antibiotic resistance genes from probiotic microorganisms.

If you do not want probiotic supplements, then you can consume the naturally occurring probiotics in foods.

Foods Rich In Probiotics For Breastfeeding Mothers

You can add the following probiotic foods to your diet.

Fermented milk products

  1. Yogurt: The fermented dairy product can be prepared at home or purchased from the market. Several types of yogurt exist depending on the number of probiotic strains present in it. You may follow these steps while buying it. 
  • Read the label and select a variant that has multiple ingredients
  • Pick yogurt low in added sugar, high in protein and calcium
  • It should be fortified with some essential nutrients, such as vitamin D
  1. Kefir: The fermented dairy product can be prepared from milk and kefir grains. In comparison to yogurt, kefir has a wider variety of microorganism strains (20).
  1. Soft cheeses: Not all probiotics may survive by the time they reach the stomach and intestines. Certain types of soft fermented cheese, such as Gouda, contain probiotics that are strong enough to make their way to the gut.
  1. Acidophilus milk: Regular milk enriched with Lactobacillus acidophilus is a good source of probiotics. This bacterial strain is also found in the human gut, and hence this bacteria is considered beneficial (21).

Buttermilk, sour cream, leben (a type of fermented milk), skyr, and kumis are a few other probiotic fermented milk products you could consume regularly.

Fermented Vegetable And Fruit Products

  1. Sauerkraut: Made by fermenting cabbage, sauerkraut is one of the richest sources of gut-friendly bacteria, and the preparation can be consumed every day.
  1. Kimchi: The Korean food is made from fermented cabbage (napa cabbage) and Korean radish. As kimchi is spicy, you may have it sparingly, especially if you are prone to nausea or acid reflux.

Other Fermented Products

  1. Miso: Miso is a traditional Japanese seasoning prepared by fermenting soybeans with salt and a fungus named Aspergillus oryzae. It is used as a primary ingredient for miso soup, and is rich in nutrients. Miso could come across as too salty, and thus it’s intake while breastfeeding must be done cautiously.
  1. Tempeh: Tempeh is a traditional Indonesian soy product prepared by fermentation of soybeans. It is used as a meat substitute, just as tofu. Tempeh is rich in probiotics, along with other beneficial nutrients, such as vitamins and protein.
  1. Kombucha tea: A type of sweetened, slightly alcoholic black tea, kombucha can be a perfect replacement for regular tea and coffee. The alcohol content of the tea is less than 0.5%, thus not of any physiological significance. Apart from containing various probiotic strains, the tea also has a considerable amount of antioxidants.

Frequently Asked Questions

1. Which probiotic is safe while breastfeeding?

Since probiotics are safe for consumption during breastfeeding, you may consume them through foods. However, avoid probiotics derived from milk if you are lactose intolerant or if they cause any discomfort after consumption. Also, avoid the intake of probiotics through supplements unless prescribed by a medical advisor.

2. Can probiotics make a baby gassy?

Probiotics are safe for both the mother and the baby while breastfeeding. However, if you notice that your baby shows any discomfort after consuming probiotics, discontinue its intake and consult your doctor.

3. Can probiotics increase milk supply?

It is currently unknown whether probiotics increase the supply of breastmilk. The current studies only suggest that probiotics may alter the probiotic composition of breast milk.

Probiotics for breastfeeding mothers may improve the immune properties of breast milk. However, more randomized control trials are required to prove this benefit. Probiotics may promote mothers’ and babies’ digestive health. They are not regulated by the food and drug administration, and there have been cases of contaminated supplements. Hence, you must ensure to get good quality probiotics from trusted sellers. Change the probiotic or seek a doctor’s opinion if you experience digestive problems after consuming probiotics. Fermented milk products such as soft cheeses, kefir, yogurt, and fermented vegetables such as kimchi are probiotic food sources.


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
1. Jackie Elias et al.; Are probiotics safe for use during pregnancy and lactation?; National Center For Biotechnology Information
2. Rautava S et al.; Probiotics during pregnancy and breast-feeding might confer immunomodulatory protection against atopic disease in the infant.; National Center For Biotechnology Information
3. Kiera Murphy et al.; The Composition of Human Milk and Infant Faecal Microbiota Over the First Three Months of Life: A Pilot Study; National Center For Biotechnology Information
4. Jost T et al.; Vertical mother-neonate transfer of maternal gut bacteria via breastfeeding.; National Center For Biotechnology Information
5. Probiotics: What You Need To Know; NCCIH
6. Elizabeth C. Verna; Use of probiotics in gastrointestinal disorders: what to recommend?; National Center For Biotechnology Information
7. Taylor C. Judkins et al.; Probiotics, Nutrition, and the Small Intestine; Springer Link
8. Fang Yana and D.B. Polk; Probiotics and immune health; National Center For Biotechnology Information
9. Martin F. Bachmanna and Manfred Kop; On the Role of the Innate Immunity in Autoimmune Disease; National Center For Biotechnology Information
10. Turgay Akgu and Tolga Karakan; The role of probiotics in women with recurrent urinary tract infections; National Center For Biotechnology Information
11. Does your vagina really need a probiotic?; Harvard Health Publishing
12. A. P. S. Hungin et al.; Systematic review: probiotics in the management of lower gastrointestinal symptoms – an updated evidence‐based international consensus; National Center For Biotechnology Information
13. Probiotics may help boost mood and cognitive function; Harvard Health Publishing
14. Yadav H et al.; Beneficial metabolic effects of a probiotic via butyrate-induced GLP-1 hormone secretion.; National center For Biotechnology Information
15. Marina Sanchez et al.; Effects of a Diet-Based Weight-Reducing Program with Probiotic Supplementation on Satiety Efficiency, Eating Behaviour Traits, and Psychosocial Behaviours in Obese Individuals; National Center Foir Biotechnology Information
16. Maria Kechagia et al.; Health Benefits of Probiotics: A Review; National Center For Biotechnology Information
17. Julio Plaza-Diaz et al.; Evidence of the Anti-Inflammatory Effects of Probiotics and Synbiotics in Intestinal Chronic Diseases; National Center For Biotechnology Information
18. Health benefits of taking probiotics; Harvard Health Publishing
19. Probiotics; NHS UK
20. Mohamed A. Farag et al.; The Many Faces of Kefir Fermented Dairy Products: Quality Characteristics, Flavour Chemistry, Nutritional Value, Health Benefits, and Safety; MDPI
21. Farag MA et al.; Rediscovering acidophilus milk, its quality characteristics, manufacturing methods, flavor chemistry and nutritional value.; National Center For Biotechnology Information
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Swati Patwal

Swati Patwal is a clinical nutritionist, a Certified Diabetes Educator (CDE) and a toddler mom with over eight years of experience in diverse fields of nutrition. She started her career as a CSR project coordinator for a healthy eating and active lifestyle project catering to school children. Then she worked as a nutrition faculty and clinical nutrition coach in different... more

Charmaine Dominguez

Charmaine Dominguez is a plant-based online dietitian nutritionist. She has her own online nutrition practice. Charmaine is currently living in LA, California in the US, and pursuing Masters of Public Health at California State University, Long Beach. She has completed her Bachelor in Nutrition and Dietetics at California State University, Long Beach. Charmaine is passionate about helping others regain control... more