Illustration, not a product photo.
Limosilactobacillus reuteri; strains include DSM 17938 (BioGaia) and ATCC PTA 6475.
278 owner comments (119 with a clear rating) from r/SIBO, r/Microbiome, r/IBS, November 2025 to October 2026. Top 95% of the 36 rated supplements.
Value is not rated: the example products differ too much in dose to compare cost fairly. How we score.
L. reuteri is rated below most supplements we track: 3.5/5. Of 119 rated owner comments, 92 were positive, 6 mixed and 21 negative; 11 mention an unwanted effect. People talk most about bloating & gas and side effects.
Reddit comments are self-reported and unverified. They tell you what people noticed, not whether a supplement works or is safe for you.
Here is how to read a probiotic label by strain. See what owners report about gut supplements for SIBO. Compare the top-rated options for loose stools by symptom.
Supplements can interact with medicines. Talk to a doctor or pharmacist first, especially if you are pregnant, take prescription medicine, or have red-flag symptoms. See supplement safety and interactions.
| Context | Rated owner comments | Positive | Negative | Unwanted effects |
|---|---|---|---|---|
| SIBO | 81 | 64 | 14 | 7 |
| Bloating & gas | 21 | 16 | 3 | 2 |
| IBS-C & constipation | 12 | 8 | 3 | 1 |
| After antibiotics | 10 | 6 | 2 | 1 |
| Pain & cramping | 8 | 5 | 0 | 0 |
| IBS-D & loose stools | 3 | 0 | 2 | 1 |
4/5“I used that when I first started making Reuteri yogurt now I am using Oxiceutics which a lot of people suspect is the BioGaia strains just not named.”
5/5“I also swear by taking a Reuteri supplement for improving pooping.”
4/5 Bloating & gas“Try L Reuteri, I use biogaia gastrus - there’s a study done on it that shows it helps reduce methane, in some patients it cleared their methane completely.”
1/5 Side effects“I have IBS-D also and the L Reuteri did nothing for me taking the caplets and the yogurt.”
2/5“When i take l reuteri capsules i can take handfuls with no effect but when i make the yogurt with it its magic”
4/5 Side effects“Most of the ReuteriYogurt sub on here is folks who were too lazy to buy the book, asking about how to make it or why their batches failed, or reporting crazy benefits or crazy side-effects - basically like any forum about, well, anything.”
4/5 Die-offSide effects“BioGaia Reuteri def helped me see improvements.”
4/5“Reuteri helped me get my ex back and hooked up with her within a week.”
4/5“For me, it’s back to L-reuteri supplement, ginger and artichoke capsules and occasional magnesium glycinate.”
4/5“I take Biogaia which has the strain l reuteri dsm 17938, which according to my research is a strain of l reuteri that actually helps with histamine.”
4/5 Cost“Then I tried culturing each strain individually, I got absolutely no where with the reuteri and the coagulans.”
4/5“Biogaia L Reuteri protectis helps me the most in lowering methane making your own yogurt with it improves potency by multiple magnitudes, plentyof tutorialson youtube and reddit on how to do so.,”
3/5“Both caused sleep issues, I’ve used L Reuteri and it fixed my sleeping, I even started having vivid dreams.”
4/5“Reuteri super gut yogurt (you can find his book on amazon called super gut) and I feel great!”
4/5“I have tried biogaia l reuteri for 4 days, didn’t see much improvement.”
4/5“I am assuming you took the chewables L.Reuteri, which are known to cause reactions in some people.”
4/5“Lactobacillus Reuteri and Lactobacillus Plantarum have also really helped me”
4/5 Fast-acting“I am on here figuring this out I just tried l reuteri yogurt last week and I had about a half a cup and then 3/4 of a cup the next day I was flying high until what I think is the die off.”
4/5 Fast-acting“reuteri interacts with the lining of your gut, which is innervated by the vagus nerve.”
3/5 Bloating & gasRegularity“in the end l.reuteri didn't work, so i did different rounds of herbals which helped a bit followed by a round of probiotics, but at the moment i'm not sure if i'm IMO free, since i haven't retested and i still have some mild bloating, for…”
4/5“My gut symptoms are significantly improved after starting L reuteri that's why i thought to ferment the yogurt with this, it's extremely beneficial for me too.”
4/5“L reuteri helped me get SIBO under control.”
4/5“l reuteri i just make it has improved my quality of life so much it got rid of my Sibo insomnia better energy better sleep , still have digestive symptoms but quality of life is a lot better”
4/5 Cost“I bought a supplement on line called msm .It was cheap but very effective and I take a prebiotic and a prebiotic during the day.The prebiotic was Perfect Pass and probiotic was Lactobacillus Reuteri .Helped so much”
3/5“The only probiotic that worked for me and didn't worsen my symptoms was L Reuteri, but I have to cycle it, because after a while it makes things worse.”
4/5 Stool form“The order for best environment for l.reuteri were”
3/5 Side effects“I did make this l reuteri yogurt, specifically his SIBO version which includes gasseri and coagulans as well, but I took it to recover from bad gastritis and H Pylori infection, and bring back my body to a more stable place because I was…”
4/5“I took SEed Probiotic (which contains L Reuteri) and my mood improved!”
4/5“L reuteri helped me a lot. But maybe do a gi map test to look into disbyosis”
4/5“I have suffered with ME/CFS for decades and have just started the L Reuteri myself.”
2/5 Cost“I'd never take a random supplement that failed to show benefit in every possible trial like Reuteri did.”
4/5“reuteri has brought me better sleep, less anxiety, a calmer attitude and a happier state of mind.”
4/5“I'm taking 1,200mg California gold nutrition PEA (palmitoylethanolamide), biogaia gastrus 200 million CFU L reuteri capsule and drinking 100ml plain milk kefir daily.”
5/5“I am researching individual strains of probiotics like reuteri that are promising for sibo.”
5/5“Reuteri and only consume it 2-3 days a week as like a maintenance dose.”
These are examples of L. reuteri products sold on Amazon. They are not ranked by Reddit and the score above is for the ingredient, not a specific product. Check the label for dose and other ingredients.
Published studies (we list them so you can read the evidence yourself; inclusion is not an endorsement):
Across 278 Reddit comments from people who say they have used it, 92 of 119 rated comments were positive and 21 negative, for a GutVerdict score of 3.5/5. These are self-reported experiences, not clinical evidence.
11 of 119 rated owner comments (9%) describe an unwanted effect such as gas, bloating or an upset stomach. Check the safety notes on this page and ask a doctor or pharmacist before starting.
Most rated owner comments come from people in r/SIBO and others who mention SIBO (81 comments, 64 positive).
No. The score summarizes Reddit owner comments only. Factual statements on this page link to NIH or PubMed sources, and nothing here is medical advice.
“I started taking spore based probiotics lately because it's supposed to help with the health of the valve and it do believe it is helping.”
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What owners report →Last updated 2026-11-03. Mentions scanned: 1398 in 765 threads.