Evidence brief · Supplement
Partially Hydrolyzed Guar Gum (PHGG) for IBS symptoms
Evidence grade B — Both IBS-C and IBS-D
- Overall grade
- Grade B
- Last revised
- 1
- graded outcome
- 0
- references listed
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
1 at grade B — 1 graded row
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- IBS symptomsEvidence grade B
Both IBS-C and IBS-D
Moderatemixed
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Studies disagree: IBS symptoms (mixed agreement).
The evidence in words
The verdict
For ibs symptoms, Partially Hydrolyzed Guar Gum (PHGG) earns evidence grade B (moderate effect, mixed consistency) — there is real evidence here. Both IBS-C and IBS-D
How it might work
It ferments to short-chain fatty acids feeding the microbiome, normalizes stool water content, and — unusually — helps both loose and hard stool.
How to use it
Safety & cautions
Very well tolerated — one of the gentlest fibers; introduce gradually.
Bottom line
A standout tolerable soluble fiber for IBS and regularity that works in both directions and causes little bloating. A great first fiber to try.
Goes with
- Partially Hydrolyzed Guar Gum (PHGG)Read the full Partially Hydrolyzed Guar Gum (PHGG) monographEvidence grade B
Related reading
Entries that share this one's tags or conditions.
- Partially Hydrolyzed Guar Gum (PHGG) for RegularityEvidence grade B — Normalizes stoolEvidence grade B
- Partially Hydrolyzed Guar Gum (PHGG): side effects, safety & interactionsVery well tolerated — one of the gentlest fibers; introduce gradually.Evidence grade B
- Inulin / FOS (Prebiotics) for IBS symptomsEvidence grade C — Often worsens FODMAP-sensitive IBSEvidence grade C
- Larch ArabinogalactanA larch-tree prebiotic fiber with modest immune and gut signals — well tolerated, lightly evidenced.Evidence grade C
Sources
This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.
Last revised . A grade is this entry's reading of the evidence, not medical advice.