Supplements for IBS-C and Constipation: What Reddit Users Report
This ranking reflects what people with IBS-C or constipation report in Reddit comments: 938 rated owner comments, ranked by a context rating that shrinks small samples toward the average. It is not a recommendation to try any of them. Persistent or severe symptoms need a doctor's assessment.
MiraLAX (an over-the-counter laxative) comes up in 5,463 comments we scanned; we do not score or rank OTC drugs. See why OTC drugs are context only.
| # | Supplement | Context rating | Rated comments here | Positive | Negative | Overall score |
|---|---|---|---|---|---|---|
| 1 | Spore-based probiotics (Bacillus) | 4.1 | 17 | 16 | 1 | 4.2 |
| 2 | Seed DS-01 | 3.9 | 6 | 5 | 0 | 3.7 |
| 3 | L. rhamnosus GG (Culturelle) | 3.9 | 4 | 4 | 0 | 3.9 |
| 4 | Acacia fiber | 3.9 | 10 | 10 | 0 | 3.8 |
| 5 | Magnesium oxide | 3.8 | 78 | 67 | 7 | 4.0 |
| 6 | Atrantil | 3.8 | 17 | 15 | 2 | 3.8 |
| 7 | High-potency multi-strain (VSL#3 / Visbiome) | 3.8 | 6 | 5 | 1 | 3.7 |
| 8 | Iberogast (STW 5) | 3.8 | 10 | 9 | 0 | 3.8 |
| 9 | Wheat dextrin (Benefiber) | 3.7 | 22 | 18 | 3 | 3.7 |
| 10 | Saccharomyces boulardii | 3.7 | 21 | 16 | 3 | 4.0 |
| 11 | Magnesium glycinate | 3.7 | 38 | 31 | 4 | 3.7 |
| 12 | Inulin / FOS | 3.7 | 9 | 7 | 1 | 3.5 |
| 13 | Digestive enzymes | 3.7 | 50 | 41 | 7 | 4.3 |
| 14 | Ginger supplements | 3.7 | 24 | 19 | 2 | 4.1 |
| 15 | Peppermint oil capsules | 3.6 | 15 | 12 | 2 | 3.8 |
| 16 | Zinc carnosine | 3.6 | 5 | 3 | 1 | 3.7 |
| 17 | L. reuteri | 3.6 | 12 | 8 | 3 | 3.5 |
| 18 | L-glutamine | 3.6 | 21 | 15 | 4 | 4.0 |
| 19 | PHGG (Sunfiber) | 3.6 | 51 | 40 | 9 | 3.9 |
| 20 | Butyrate / tributyrin | 3.6 | 11 | 9 | 2 | 3.9 |
| 21 | Candibactin-AR / BR | 3.5 | 5 | 3 | 1 | 3.5 |
| 22 | Oregano oil | 3.5 | 22 | 16 | 6 | 3.8 |
| 23 | Psyllium husk | 3.4 | 159 | 103 | 38 | 4.2 |
| 24 | B. longum 35624 (Align) | 3.4 | 12 | 7 | 5 | 3.4 |
| 25 | Magnesium citrate | 3.4 | 234 | 153 | 57 | 4.0 |
| 26 | Berberine | 3.3 | 25 | 16 | 8 | 3.6 |
| 27 | Allicin (Allimed / Allimax) | 3.3 | 39 | 24 | 12 | 3.6 |
| 28 | Activated charcoal | 3.2 | 5 | 2 | 3 | 3.7 |
| 29 | Slippery elm | 3.1 | 3 | 0 | 2 | 3.7 |
Not sure which fiber to try? See soluble fiber types explained. Our gut supplement shortlists group top-rated options by what people report. Forms differ a lot; see magnesium citrate vs oxide vs glycinate.
In their words
4/5“Spore based probiotics can be harmful or helpful depending on the person's unique microbiome.”
4/5 Side effects“For me it was first bifidobacterium probiotic strains that made me feel a lot better (SEED probiotic specifically) but after a while that wouldn't work anymore, then I started taking some random ones I found in a pharmacy, yogurt made me…”
5/5“Boulardi, culturelle, occasional Visbiome) that worked wonders for me and started having two poops on a perfect schedule nearly every day (I'm still on the probiotic regimen, and it is helping restore things slowly again).”
4/5“I wish that worked for me Acacia just seems to paralyze my intestines, I don’t know why.”
Mixed and negative reports
1/5 Pain & crampingRegularity“I take a daily magnesium oxide supplement every night before bed.”
2/5 Urgency & loose stools“I used Atrantil, similar I think, and also popular for SIBO.”
Before you try anything
- Start one supplement at a time so you can tell what made a difference.
- Check interactions with any medicine you take: safety and interactions guide.
- Background reading: How to Start a Fiber Supplement.