Probiotics: Safe Use in Pregnancy & Breastfeeding

Already taking probiotics while pregnant or breastfeeding — or thinking about starting? Here's the short answer upfront: most preparations with lactic acid bacteria are fine to use during this time, backed by solid data from studies involving thousands of pregnant and breastfeeding women. Still, there are a few real distinctions worth knowing — between capsules and raw-milk ferments, and between well-studied bacterial strains and less-researched yeasts. That's exactly what you'll find here, compact and straight to the point.

What Are Probiotics?

Probiotics are dietary supplements containing live microorganisms — usually lactic acid bacteria like Lactobacillus or Bifidobacterium, and less commonly yeasts like Saccharomyces boulardii. You already know them in small amounts from yogurt, kefir, or sauerkraut; in capsule form, you get them highly concentrated with a clearly defined composition. How many live organisms a product delivers is listed as CFU on the label — colony-forming units, usually in the billions per capsule or gram. The basic principle doesn't change during pregnancy and breastfeeding — what changes is what you pay extra attention to when it comes to selection and sourcing.

How Do Probiotics Work in the Body?

The bacterial strains you take become active in the gut, where they compete with unwanted organisms for space and nutrients and help support a balanced microbiome. This is especially relevant during pregnancy: hormonal changes slow down digestion, and many women notice constipation or bloating for the first time — something that was never an issue before. A second area that comes into focus specifically during this life stage is vaginal flora: an acidic environment, maintained by lactobacilli, is considered a natural protective mechanism — one reason you're also screened for group B strep toward the end of pregnancy anyway. Probiotics with specifically selected lactobacilli strains build on exactly this natural principle, though that's not a promise of any particular outcome — the solid research simply isn't there yet; more on that below in the “Honestly Assessed” section. Another side effect of a balanced microbiome: it supports the absorption of certain nutrients from food, such as B vitamins — a point that gets extra attention during pregnancy anyway.

Who Is This For?

This guide is for you if any of these situations apply:

• You're already taking probiotics and just found out you're pregnant: You're wondering whether you can simply carry on or should change something.
• Your digestion has been acting up since you got pregnant: Bloating, constipation, or sluggish digestion are common for many women from the second trimester onward.
• You've just finished a course of antibiotics or have one coming up — for example, for a bladder infection, dental treatment, or around the time of birth.
• You're thinking about your vaginal flora, for instance ahead of the group B strep screening toward the end of pregnancy.

In all four cases, the same applies: probiotics aren't among the nutrients where pregnancy creates a risk of inadequate intake, the way it does with folic acid or iodine. But based on current knowledge, there's also little standing in the way of using them purposefully.

Intake & Dosage

Neither the German Nutrition Society (DGE) nor any EU authority sets a fixed daily dose or upper limit for probiotics — unlike vitamins or minerals, there's no official reference value, because bacterial cultures aren't an essential nutrient. In practice, that means you take a product in the amount stated by the manufacturer, usually one capsule a day — there's no need for an extra dose “for two,” and it wouldn't provide any additional benefit. If you're feeling queasy more often in the first trimester, take the capsule with a small meal instead of on an empty stomach — that doesn't change how it works, but it does make taking it noticeably more comfortable.

With probiotics, form matters more than amount. Raw-milk cheese, unpasteurized ferments, or homemade kombucha and kefir drinks carry a real listeria risk during pregnancy — so caution applies to these products in general, regardless of which probiotics they contain. Capsule preparations with defined, tested strains are a different matter: they're manufactured under controlled conditions, usually freeze-dried, without the risks that come with raw, unpasteurized foods. For the best-studied genera — Lactobacillus and Bifidobacterium — independent reviews covering thousands of pregnant and breastfeeding women show an unremarkable safety profile, with no increased risk of birth defects, preterm birth, or C-section. For yeasts like Saccharomyces boulardii, on the other hand, the data specifically for pregnancy is still thin — not because there's anything specific speaking against it, but simply because too little targeted research has been done so far.

Even so, always check with your doctor or midwife before taking probiotics — especially if you're already taking a prenatal or postnatal multivitamin and want to avoid overlap, or if you belong to an immunocompromised risk group. This isn't a formality — it's the only way to make the decision that's right for you. Self-dosing at high levels has no place during this stage of life.

What to Look for When Buying

During pregnancy, it's worth taking a second look at the label — every detail counts here:

• Clearly named strains: Genus, species, and strain should all be on the label — “lactic acid bacteria” alone is too vague to tell you anything.
• A pure formula instead of a combination product: The fewer additional active ingredients a product contains, the less you have to check individually during this time. Herbal extracts or high-dose single vitamins have little business being in a probiotic at this stage of life.
• Keep an eye on yeasts: If a product also contains Saccharomyces boulardii, that's unproblematic for most people, but it just hasn't been specifically studied for pregnancy and breastfeeding. A pure bacterial-strain product is the more conservative choice here.
• Gastro-resistant capsules: Without this protection, a large share of the cultures dissolve in the stomach before they even reach the gut.
• CFU count through the end of shelf life: A trustworthy figure refers to the best-before date, not just the moment of manufacture.
• Independent lab testing: A brand that has raw material and finished product tested externally, and shows the results, has nothing to hide — a criterion that especially pays off right now.

Honestly Assessed

For the best-studied probiotic genera — Lactobacillus and Bifidobacterium — the safety record in pregnancy and breastfeeding is good: several independent reviews reach the same conclusion, with no indication of increased risk for mother or child. What individual strains might additionally do — for vaginal flora or a baby's immune system, for instance — is being actively researched, but the evidence isn't yet solid enough to turn into a concrete promise.

One more thing that applies, as with almost any supplement: for ethical reasons, pregnant and breastfeeding women are rarely included in studies on a specific branded product, so dedicated data for that exact product is usually missing — this applies to practically every product on the market, not just ours. The honest summary: no safety risk is known for the common bacterial strains, but no additional benefit proven specifically for this life stage either. That's exactly why the decision of whether — and which — product to take is best made together with your doctor or midwife.

Matching Products From Scheunengut

Our Intimate Flora Complex delivers four specifically selected lactobacilli strains with 15 billion CFU per day, in gastro-resistant capsules and completely free of added yeast — which places it squarely among the genera with the best safety data for pregnancy and breastfeeding. If you're more interested in general gut flora, for example after a course of antibiotics or with sluggish digestion, our Culture Complex with 23 bacterial strains covers a broad spectrum; it also contains the yeast Saccharomyces boulardii, for which — as explained above — the data in pregnancy is still thin, which is exactly why a quick check with your doctor or midwife is especially worthwhile here. We deliberately don't market any product explicitly “for pregnant women” — there's no approved claim for that, and it wouldn't give you any more certainty than the honest assessment above.

Frequently Asked Questions (FAQ)

Are probiotics safe during pregnancy?

For the best-studied strains — Lactobacillus and Bifidobacterium — several independent reviews show an unremarkable safety profile with no increased risk for mother or child. Still, check with your doctor or midwife before taking them, especially if you're already using other supplements.

Can I take probiotics while breastfeeding?

Yes — based on current knowledge, common lactic acid bacteria products are fine to take while breastfeeding too. No meaningful amount of live bacteria passes to your baby through breast milk; taking them mainly affects your own gut flora.

Can I just keep taking my usual probiotic capsules now that I'm pregnant?

In most cases, yes, as long as it's a pure product with well-studied bacterial strains. Use your next prenatal checkup as a chance to go over your current product with your doctor or midwife, especially if it contains additional active ingredients.

Are fermented foods riskier than capsules during pregnancy?

Not for pasteurized products like most yogurts. Raw-milk cheese, unpasteurized ferments, or homemade kefir, on the other hand, carry a listeria risk, regardless of the probiotics they contain. Capsule products with defined, controlled-manufacture strains avoid this risk.

Are yeasts like Saccharomyces boulardii a concern during pregnancy?

They haven't been shown to be risky, but the data specifically for pregnancy and breastfeeding is thinner than for Lactobacillus or Bifidobacterium. If you want to play it safe, choose a pure bacterial-strain product during this time.

Do probiotics help against group B strep colonization?

Reliable, scientifically established evidence for this is still lacking, so don't rely on probiotics as a substitute for the standard screening toward the end of pregnancy. What's medically appropriate afterward is a decision you make together with your care team.

Do I need to stop taking probiotics as soon as I get pregnant?

Stopping right away usually isn't necessary if it's a pure product with well-studied bacterial strains. Still, briefly check in with your doctor or midwife so you can feel completely confident about it.