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.

What people with IBS actually report about gut supplements

We read 428,786 Reddit comments from r/IBS, r/SIBO, r/Constipation, r/Microbiome and r/Supplements (November 2025 to October 2026), kept 9,413 from people who say they used a supplement, and scored 36 ingredients and types. Every quote links to its source, and every fact links to NIH or PubMed.

Browse all supplements Find by symptom

Highest-rated by Reddit owners

Digestive enzymes illustration
Digestive enzymes

Digestive enzymes

4.3 (809 owner comments)
Bloating & gasPain & cramping

“I began to take 1 capsule before each meal together with digestive enzymes and my symptoms lessened by about 70-80% in a few weeks.”

What owners report →
Psyllium husk illustration
Fiber

Psyllium husk

4.2 (1064 owner comments)
RegularityStool form

“Neither psyllium nor anything else should be a sole source of fiber for anyone.”

What owners report →
Magnesium citrate illustration
Magnesium

Magnesium citrate

4.0 (843 owner comments)
RegularityPain & cramping

“Today I would take some magnesium citrate, because wherever is fermenting in your gut needs to be released not stuck up inside of you.”

What owners report →

By symptom

IBS-C & constipation

29 supplements ranked

IBS-D & loose stools

29 supplements ranked

Bloating & gas

32 supplements ranked

SIBO

34 supplements ranked

After antibiotics

26 supplements ranked

Stool form

10 supplements ranked

Pain & cramping

29 supplements ranked

Popular comparisons

Guides

GutVerdict does not score prescription or over-the-counter drugs. Why MiraLAX, Imodium and Gas-X are context only.