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 211,972 Reddit comments from r/IBS, r/SIBO, r/Constipation, r/Microbiome and r/Supplements (2026-05 to 2026-11), kept 3,913 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

Psyllium husk illustration
Fiber

Psyllium husk

4.3 (431 owner comments)
RegularityUrgency & loose stools

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

What owners report →
Digestive enzymes illustration
Digestive enzymes

Digestive enzymes

4.2 (327 owner comments)
Bloating & gasPain & cramping

“The one thing that helped was digestive enzymes and betaine hcl in a small dose.”

What owners report →
Magnesium citrate illustration
Magnesium

Magnesium citrate

3.9 (268 owner comments)
RegularitySide effects

“Try magnesium citrate. Take the pills or powder(in a drink) before bed. Lifesaver for me.”

What owners report →

By symptom

IBS-C & constipation

23 supplements ranked

IBS-D & loose stools

16 supplements ranked

Bloating & gas

27 supplements ranked

SIBO

31 supplements ranked

After antibiotics

21 supplements ranked

Stool form

6 supplements ranked

Pain & cramping

21 supplements ranked

Popular comparisons

Guides

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