Herbal antimicrobials
Oregano oil
3.8 (494 owner comments)
Bloating & gasSide effects
“- solved the bloating with berberine and oil of oregano”
What owners report →Medical disclaimer: GutVerdict summarizes what people say about supplements on Reddit. It is not medical advice, and nothing here is meant to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration. Talk to your doctor or pharmacist before starting a supplement, especially if you are pregnant, take medicines, or have a medical condition. New, severe or worsening symptoms (such as blood in the stool, weight loss, fever, or night-time symptoms) need a doctor, not a supplement. Full disclaimer.
Herbal antimicrobials · capsules
Berberine: What People With IBS Report on Reddit
Illustration, not a product photo.
A plant alkaloid from goldenseal, barberry and Coptis, discussed on r/SIBO as part of herbal protocols.
3.6 GutVerdict score
569 owner comments (197 with a clear rating) from r/SIBO, r/Microbiome, r/IBS, r/Supplements, r/Constipation, November 2025 to October 2026. Top 78% of the 36 rated supplements.
Owner sentiment3.3
Recommendations3.0
Tolerability4.5
ValueNot rated
Value is not rated: the example products differ too much in dose to compare cost fairly. How we score.
The short version
Berberine is rated below most supplements we track: 3.6/5. Of 197 rated owner comments, 126 were positive, 11 mixed and 60 negative; 35 mention an unwanted effect. People talk most about side effects and bloating & gas.
Reddit comments are self-reported and unverified. They tell you what people noticed, not whether a supplement works or is safe for you.
Before starting, check gut supplement safety and interactions. See what owners report about gut supplements for constipation. Compare the top-rated options for cramping by symptom.
What it is
- Berberine is found in goldenseal and other plants; a 2015 randomized trial tested berberine in IBS with diarrhea.[NCCIH][PubMed]
Safety and interactions
- Berberine can interact with many medicines and can lower blood sugar; ask a doctor if you take any prescription drug, especially for diabetes.[NCCIH]
- Do not use during pregnancy or breastfeeding, and never give it to infants; berberine can harm newborns.[NCCIH]
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.
Reports by symptom
| Context | Rated owner comments | Positive | Negative | Unwanted effects |
|---|---|---|---|---|
| SIBO | 170 | 107 | 54 | 22 |
| Bloating & gas | 41 | 29 | 7 | 6 |
| After antibiotics | 26 | 19 | 7 | 3 |
| Pain & cramping | 26 | 16 | 9 | 4 |
| IBS-C & constipation | 25 | 16 | 8 | 3 |
| IBS-D & loose stools | 11 | 5 | 6 | 5 |
What Reddit owners say
Commonly praised
- Bloating & gas: 18 owner comments
- Regularity: 5 owner comments
- Pain & cramping: 5 owner comments
Common complaints
- Side effects: 26 owner comments
- Pain & cramping: 5 owner comments
- Bloating & gas: 3 owner comments
4/5“My psychiatrist/medicine manager actually recommended I try berberine, which is a plant based supplement derived from traditional chinese medicine.”
4/5“Berberine is the only anti-microbial that has helped me.”
4/5“Im seeing some relief in the severity of my sympoms, finally, with berberine.”
2/5 Side effectsUrgency & loose stools“I had giardia which gave me post infectious Ibs for years until I took berberine because it was supposed to help with weight loss.”
2/5 Bloating & gas““What brand of berberine?? I’ve tried two and one bloated me so bad””
+30 more owner comments
2/5 Side effects“I do have to mention that you should often challenge your AI as it can still hallucinate often - it recommended a few things that have made things worse (berberine for me, for example).”
4/5“I am currently titrating Berberine - I am very sensitive and have to go slow.”
4/5“That’s great that berberine helped you but I wouldn’t continue using it long term.”
4/5 Bloating & gas“- solved the bloating with berberine and oil of oregano”
4/5“I still take atrantil and berberine for my methane SIBO, but im doing 95% better.”
4/5“If you can’t get antibiotics, you can look into natural antimicrobials like Berberine, it also worked for me to decrease the odor.”
2/5“I tried berberine and Rifaxamin so far. No luck”
4/5 Bloating & gasUrgency & loose stools“It helps with the bloating but I am still constipated and have loose stool and could only achieve to print out a well shaped sausage when I was taking 1g of berberine (4 weeks).”
4/5“I did not think I could get rifaxamin covered by insurance, so I started with berberine and prescription-strength allicin as antibiotic.”
2/5 Fast-acting“I immediately began my elemental diet against her useless advice and taking berberine, allicin, gut motility pills, hitting the gym, meditating, etc.”
4/5“When using antimicrobials i'd lean towards black garlic instead, as well as other plant based like black seed oil, monolaurin, berberine and a few others, it's important to include biofilm agents as well.”
4/5“The Berberine was nice, I felt like it really helped my blood sugar as well as held my SIBO back when I was on it.”
5/5 Fast-acting“I took a break from the berberine then reintroduced it a week later but this time I’m taking b12 and B1 and the exhaustion and head in clouds feeling is GONE.”
4/5 Bloating & gas“I tried berberine with cinnamon for getting rid of archaea which cause methane related bloating.”
4/5“Personally I have found success with taking berberine.”
4/5 Bloating & gas“yeah the berberine part caught my attention too.”
4/5 Pain & cramping“Man I wish I could still take berberine.”
4/5 Fast-acting“I forget how I heard about it but I tried berberine.”
4/5“If it’s going to be a long wait, there’s lots of good info on antimicrobial protocols in this sub (I did a combo of berberine, allicinmax, and NAC) for a month and it helped quite a bit.”
4/5“I am using oregano , artichoke , and berberine oil… and I feel like 90 percent better now , and it’s not even like 3 days…… also need to follow low food map while taking these ….”
2/5“I had to stop using it (was taking it alongside berberine) after two weeks.”
4/5“Berberine hcl + oregano oil/oliveoil in DRcaps, and double DRcaps für the deep small intestine worked for me.”
4/5“I've been taking Thorne Berberine twice a day for 2 years for a few microbiome overgrowth.”
4/5 Bloating & gasPain & cramping“tried berberine for exactly that reason, the cravings thing.”
4/5“I also take berberine for blood sugar issues and I do think that helps with motility.”
2/5 Side effectsStopped working“Tried natural antibiotic cause i suspected sibo, oregano oil cause nausea, caprylic acid didn’t seem to give me any reaction, berberine made me back to have a few food intolerance again.”
4/5 Side effects“Started meo nutrition berberine about 2 months ago and my digestion's way better now.”
4/5“What worked for me was 2 weeks of berberine + neem + allicin to thin the herd, then the rebuild phase with a prebiotic blend called Best Gut Forever, plus walking after meals and a 4 hour gap between meals so the mmc actually does its job.”
4/5“We reduced my berberine dosage, but I still take that with the okra pepsin e3, cataplex b, protefood, gastrex, drenamin, and chlorophyll (But chrolpyll only before breakfast).”
4/5“Berberine has helped me grow or strengthen my beta cells in my pancreas.”
Example products
These are examples of Berberine 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.
Example product · not Reddit-scored
THORNE Berberine, Dual Action Phytosome & HCl Formula, 60 Capsules
$44.00 on Amazon (price as of 2026-11-03). Prices change; check Amazon for the current price.
Example product · not Reddit-scored
Integrative Therapeutics Berberine 1500mg Per Day, 60 Capsules
$32.75 on Amazon (price as of 2026-11-03). Prices change; check Amazon for the current price.
Research to read
Published studies (we list them so you can read the evidence yourself; inclusion is not an endorsement):
- Phytother Res 2015: A Randomized Clinical Trial of Berberine Hydrochloride in Patients with Diarrhea-Predominant Irritable Bowel Syndrome.
- J Altern Complement Med 2021: Alternative Treatment Approaches to Small Intestinal Bacterial Overgrowth: A Systematic Review.
FAQ
What do people with IBS say about Berberine on Reddit?
Across 569 Reddit comments from people who say they have used it, 126 of 197 rated comments were positive and 60 negative, for a GutVerdict score of 3.6/5. These are self-reported experiences, not clinical evidence.
Do people report side effects with Berberine?
35 of 197 rated owner comments (18%) 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.
Who talks about Berberine most?
Most rated owner comments come from people in r/SIBO and others who mention SIBO (170 comments, 107 positive).
Is Berberine scored on clinical evidence?
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.
Related supplements
Herbal antimicrobials
Allicin (Allimed / Allimax)
3.6 (425 owner comments)
Side effectsBloating & gas
“The allicin compound is where the magic happens, but you gotta crush or chop it and let it sit for like 10 minutes before cooking to activate it properly.”
What owners report →
Herbal antimicrobials
Candibactin-AR / BR
3.5 (121 owner comments)
Side effectsCost
“I went to a doctor that told me to take allicin and candibactin-br for months and it helped rebalance my gut.”
What owners report →Comparisons: Berberine vs Allicin (Allimed / Allimax)
Last updated 2026-11-03. Mentions scanned: 1964 in 1168 threads.