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.

Question · SIBO

What do people with SIBO report about berberine?

Mixed, going by Reddit owner reports: 107 of 170 rated comments from people in r/SIBO and others who mention SIBO describe a good experience with Berberine, and 54 describe a poor one. That is self-reported experience, not proof that it works, and results vary from person to person.

Berberine, SIBO	Owner comments
Rated comments in this context	170
Positive	107 (63%)
Negative	54 (32%)
Describe an unwanted effect	22
Context rating (small samples pulled to the average)	3.3

Berberine overall: 3.6 from 569 owner comments in Reddit IBS and gut communities, November 2025 to October 2026.

What the research says

Berberine is found in goldenseal and other plants; a 2015 randomized trial tested berberine in IBS with diarrhea.^[NCCIH]^[PubMed]

Safety

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]

Good experiences

4/5
“Berberine is the only anti-microbial that has helped me.”

owner comment via r/SIBO · 2025-12-11 · 9 upvotes

4/5
“Im seeing some relief in the severity of my sympoms, finally, with berberine.”

owner comment via r/SIBO · 2026-07-28 · 8 upvotes

4/5
“I am currently titrating Berberine - I am very sensitive and have to go slow.”

owner comment via r/SIBO · 2026-06-14 · 2 upvotes

Poor experiences

2/5 Bloating & gas
““What brand of berberine?? I’ve tried two and one bloated me so bad””

owner comment via r/SIBO · 2026-03-03 · 18 upvotes

2/5
“I tried berberine and Rifaxamin so far. No luck”

owner comment via r/SIBO · 2026-01-03 · 5 upvotes

How reports compare in other contexts

Context	Rated comments	Positive	Negative
Bloating & gas	41	29	7
After antibiotics	26	19	7
Pain & cramping	26	16	9
IBS-C & constipation	25	16	8
IBS-D & loose stools	11	5	6

More on Berberine

Talk to a doctor about new, severe or lasting symptoms, and to a pharmacist before combining supplements with medicines.