Can you take too many probiotics? Doubling up, symptoms and limits
By the Physician's Choice editorial team.
Published Oct 10, 2026. Last checked Oct 10, 2026. 8 min read.
Published by Physician's Choice, which makes the products discussed on this site.
Short version
None of the sources on this page sets an upper limit for probiotics. The effects they describe for healthy people are mostly mild: NIH says that in healthy people probiotics may cause gas, and Cleveland Clinic says that suddenly having more gas-producing probiotics than usual can bring more bloating and gas. If you double up, add up the servings on every label and ask your doctor or pharmacist first.
Sources: NIH Office of Dietary Supplements; Cleveland Clinic.
Key facts
- 0
Upper limits for probiotics set by the sources on this page.
[All sources on this page] - Gas
"In healthy people, probiotics may cause gas, but they rarely cause infections or other health problems."
[NIH ODS] - Bloating
With probiotics that make gas, suddenly having more of them than usual can mean more bloating and gas.
[Cleveland Clinic] - High doses
Supplement side effects in general are most likely at high doses or when you take many different supplements.
[NIH ODS] - 1 capsule
60 Billion Probiotic: 1 capsule daily, with or without food.
[Product page] - Warning
Read the "Warning" and "Other Information" sections on each package.
[ISAPP]
What NIH says, word for word
Side effects of probiotics are usually minor and consist of self-limited gastrointestinal symptoms, such as gas.
NIH Office of Dietary Supplements, Probiotics fact sheet for health professionals
You are most likely to have side effects from dietary supplements if you take them at high doses, or instead of prescribed medicines, or if you take many different supplements.
NIH Office of Dietary Supplements, Dietary Supplements: What You Need to Know
Quoted as written. The first line is about probiotics; the second is about dietary supplements of every kind. Links to both are in the source list.
Is there an upper limit for probiotics?
Not in any source on this page. NIH's fact sheet for consumers says there are no official recommendations that cover probiotic use by healthy people, and it gives no maximum. It also warns that products are hard to compare: "the number of microorganisms they contain can vary widely between products."
No limit is not the same as proof that any amount is fine. The National Center for Complementary and Integrative Health notes that "few studies have looked at the safety of probiotics in detail," so information on how often side effects happen, and how strong they are, is lacking. The honest reading is that nobody has set a ceiling, not that one has been tested and cleared.
Dose ranges and higher counts have their own answers: How many CFU should a daily probiotic have? and Is a 100 billion CFU probiotic better than a 60 billion CFU probiotic?
What are the symptoms of too many probiotics?
The sources describe digestive symptoms, mainly gas and bloating, and none ties a symptom to a set number of probiotics.
Cleveland Clinic's health library is the source that comes closest to the "too many" question. It says that, in the short term, introducing new probiotics could bring on diarrhea, constipation or stomach pain, "especially if you’re taking a large dose or if your gut tends to be sensitive in general." On gas, it explains that some probiotics produce gases as byproducts, and "If you suddenly have more of them than usual, you might notice increased bloating and gas during digestion."
Physician's Choice puts NIH's view this way:
"According to the NIH Office of Dietary Supplements, probiotics are generally well tolerated by healthy people, though they may cause mild digestive symptoms, such as gas. Probiotics may not be appropriate for everyone, particularly people who are seriously ill or have weakened immune systems. Talk with your healthcare provider before use."
NIH's fact sheet for health professionals says probiotic use has been linked to a few cases of bacteria or fungi in the blood, or infections, that led to severe illness, and that "most of these cases involved individuals who were severely ill or immunocompromised."
Can you take two probiotics at the same time?
No source on this page forbids it, and none sets a combined amount. Start with NIH's general rule for supplements, quoted above: side effects are most likely at high doses or when you take many different supplements. That line covers every kind of supplement, and NIH lists gummies among the forms dietary supplements come in, so a probiotic gummy sold as a supplement counts as one.
Then read each label as its own product. ISAPP's consumer guide lists what a probiotic label should tell you, starting with the strain, the CFU and "Suggested serving size. How much do I take?" Cleveland Clinic's advice on a supplement is short: "Take it as recommended on the label." NIH adds that "The manufacturer suggests the serving size, but your health care provider might decide a different amount is more appropriate for you."
NIH also suggests a written record of every supplement and medicine you take: "For each product, note the name, the dose you take, how often you take it, and the reason for use."
Can you take a probiotic and eat yogurt, kefir or other fermented foods?
None of these sources sets a limit for a supplement plus fermented foods, and the food side is hard to count. Harvard Health puts it bluntly: "Food manufacturers are not required to show a specific dose of a specific probiotic, so they don't."
NIH says that if a food contains probiotics, its label should list the genus, species and strain, and it cautions that while microorganisms are used to make fermented foods, "not all these foods necessarily contain probiotics with proven health benefits." ISAPP explains one reason: pasteurization, baking, smoking or filtering "can kill or remove the live cultures in them." Cleveland Clinic suggests checking food labels for "live and active cultures," and notes that "A supplement will typically provide a higher dose of probiotics than food sources will."
ISAPP does not rank one route over the other: "Probiotic content is generally more important than the way in which you consume them." So read both labels, and mention both to your provider.
One public post from the month we read asked exactly this: whether taking probiotic pills every other day plus homemade kefir daily "is too much on the system." Public Reddit post, r/Microbiome, Sep 2026; quoted without the brand names it mentions.
Doubling up, situation by situation
Five common ways people end up with more than one probiotic, what to check on each label, and what the sources say. No row sets a safe or unsafe amount, because no source does.
| Situation | What to check on each label | What the sources say |
|---|---|---|
| Two capsules of the same probiotic | The serving size and the directions. For 60 Billion Probiotic: 1 capsule daily, with or without food. | The maker suggests the serving size; your provider "might decide a different amount is more appropriate for you." NIH ODS |
| Two different probiotic products | Serving size, CFU per serving and when it is counted, the species and strain names, and the "Warning" section on each. | Side effects from supplements are most likely at high doses or "if you take many different supplements." Microbe counts "can vary widely between products." NIH ODS |
| A capsule plus probiotic gummies | The gummy's serving size, CFU per serving and species. If it is sold as a supplement, count it as a second one. | Gummies are one of the forms dietary supplements come in. NIH ODS Read "Warning" and "Other Information" on each package. ISAPP |
| A capsule plus yogurt, kefir or other fermented foods | "Live and active cultures" on the food label, and the species if it lists them. A dose may not be printed. | Food makers "are not required to show a specific dose." Harvard Health A supplement "will typically provide a higher dose of probiotics than food sources will." Cleveland Clinic |
| Switching to, or adding, a higher-CFU product | The CFU per serving and whether it is counted at manufacture or at expiration, plus the serving size. | New probiotics can bring short-term digestive symptoms, "especially if you’re taking a large dose." Cleveland Clinic |
How a CFU count and its date are read is set out in What does CFU mean on a probiotic label?
Who should ask a doctor before doubling up?
Anyone in the groups Physician's Choice names, before taking even one probiotic:
"If you are pregnant or breastfeeding, are seriously ill, or have a weakened immune system, consult your healthcare provider before taking a probiotic or any other dietary supplement."
NCCIH gives the reason in its own words: the risk of harmful effects "is greater in people with severe illnesses or compromised immune systems." On a prescribed antibiotic? The spacing question is answered in Can you take probiotics with antibiotics?
Where Physician's Choice fits
Physician's Choice, which publishes this site, makes 60 Billion Probiotic. Its panel gives a serving of 1 capsule, 30 servings to the bottle, and a 220 mg probiotic blend at 60 billion CFU, counted at expiration per the strain dossier. The directions are 1 capsule daily, with or without food, and they say nothing about pairing it with another probiotic. So a second capsule a day goes beyond the label, and a second probiotic product on top is a question for your doctor or pharmacist.
Physician's Choice also makes 100 Billion Probiotic, the product this site is named for. Its label is still being confirmed, so no serving, count or strain for it appears here, and nothing on this page suggests taking the two together. You can read the full 60 Billion Probiotic label on physicianschoice.com.
Talk to a doctor if
- Gas, bloating or cramps after adding a second probiotic are strong, or keep getting worse instead of settling
- There is blood in your stool, or belly pain that is severe
- You take a prescription medicine and want to add any supplement
- You have a reaction that worries you. Physician's Choice: "If you experience an adverse event, stop using the product and contact your healthcare provider immediately. Please also notify us at support@physicianschoice.com or 1-877-395-2707."
NIH adds that a reaction to any dietary supplement can also be reported to FDA, by calling 800-FDA-1088 or through FDA's online form.
Where these numbers come from
- September 5 to October 5, 2026
- Public Reddit posts we read: 1,031, from 228 communities; 63 were about probiotics. One asked whether probiotic pills every other day plus homemade kefir daily were too much.
- The question
- "Can you take too many probiotics?", with the follow-ups people ask next: can you take too much, and what are the symptoms of too much.
- Oct 10, 2026
- Read NIH's two probiotic fact sheets and its general supplement fact sheet, NCCIH, Cleveland Clinic, two ISAPP guides, Harvard Health, the 60 Billion Probiotic page and the strain dossier. Every quote was matched to its source.
- Oct 10, 2026
- Published. Left out on purpose: any number for 100 Billion Probiotic, and any dose or CFU range, which other answers on this site cover.
- Next
- Each recheck adds a dated line here.
Common questions
What are the symptoms of too many probiotics?
The sources describe digestive symptoms, not a set amount. NIH says probiotics may cause gas in healthy people, and Cleveland Clinic says that suddenly having more gas-producing probiotics than usual can mean more bloating and gas. If symptoms are strong or keep getting worse, stop and ask a doctor.
Can I take two different probiotics at once?
No source on this page forbids it or sets a combined limit. NIH says side effects from dietary supplements in general are most likely at high doses or when you take many different supplements. Add up the servings on both labels, follow each label's directions and ask your doctor or pharmacist first.
Is it OK to take a probiotic and eat yogurt every day?
None of these sources sets a limit for food plus a supplement. Cleveland Clinic says a supplement will typically provide a higher dose than food, and Harvard Health notes that food makers are not required to show a probiotic dose. Check the yogurt label for live and active cultures and the species named.
Can you take 2 capsules of 60 Billion Probiotic a day?
Its directions are 1 capsule daily, with or without food, so two a day goes beyond the label. NIH notes that a maker suggests the serving size and that your health care provider might decide a different amount suits you. Ask before you change the serving.
What should I do if a probiotic gives me a reaction?
Physician's Choice says: "If you experience an adverse event, stop using the product and contact your healthcare provider immediately. Please also notify us at support@physicianschoice.com or 1-877-395-2707." NIH adds that you can also report a reaction to a dietary supplement to FDA, at 800-FDA-1088.
Other answers on this site
- How many CFU should a daily probiotic have? Doses used in studiesPublished Oct 6, 2026. NIH ranges and the doses used in studies, strain by strain.
- Is a 100 billion CFU probiotic better than a 60 billion CFU probiotic?Published Oct 8, 2026. What NIH, ISAPP and WGO say about higher counts.
- What does CFU mean on a probiotic label?Published Oct 9, 2026. The colony forming unit, and when the count applies.
- Can you take probiotics with antibiotics? Timing, spacing and what to askPublished Oct 10, 2026. How many hours apart, and what to ask a pharmacist.
Sources
- NIH Office of Dietary Supplements: Probiotics fact sheet for consumersUpdated Nov 17, 2025. Gas in healthy people; no official recommendations; counts vary between products; food labels; fermented foods.
- NIH Office of Dietary Supplements: Probiotics fact sheet for health professionalsUpdated Mar 25, 2025. Side effects usually minor; rare severe cases in very sick people.
- NIH Office of Dietary Supplements: Dietary Supplements, What You Need to KnowUpdated Jan 4, 2023. About supplements of every kind: high doses and many products, serving size, gummies as a form, keeping a record, medicines, reporting a reaction.
- NCCIH: Probiotics, Usefulness and SafetyLast updated August 2019. Few detailed safety studies; higher risk in severe illness.
- Cleveland Clinic: Probiotics, What They Are, Benefits and Side EffectsHealth Library, last updated Oct 30, 2023. Short-term symptoms with a large dose; more bloating and gas with more gas-producing probiotics; take it as the label says; supplements vs food; live and active cultures.
- ISAPP: Probiotics, A Consumer Guide for Making Smart ChoicesInternational Scientific Association for Probiotics and Prebiotics, dated Oct 7, 2021. What a label should tell you; Warning and Other Information; food or supplement.
- ISAPP: Probiotics, Dispelling Myths2018. Processing that removes live cultures from fermented foods.
- Harvard Health Publishing: Should you take probiotics?Feb 2, 2022. Food labels and probiotic doses.
- Physician's Choice: 60 Billion Probiotic product pageDirections and the Supplement Facts panel.
- Physician's Choice: strain dossierThe count at expiration.