IBS symptoms: what the evidence supports and Probiotics
Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.
Outcome map
IBS symptoms: what the evidence supports
3 graded interventions for ibs symptoms, ranked by strength of evidence.
Grade B3 graded outcomesrevised Jul 10, 2026
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.
Compound or practice
Probiotics
Strain-specific or nothing — real benefits for antibiotic-associated diarrhea and some IBS, but 'contains 40 billion CFU' is not a mechanism.
Grade B2 graded outcomesrevised Jul 10, 2026
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
Graded in both
Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.
No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.
Graded only in IBS symptoms: what the evidence supports
- Probiotics Small effectEvidence grade B
- Partially Hydrolyzed Guar Gum (PHGG) Moderate effectEvidence grade B
- Inulin / FOS (Prebiotics) Unclear effectEvidence grade C
Graded only in Probiotics
- Antibiotic-associated diarrhea Moderate effectEvidence grade B
- IBS symptoms Small effectEvidence grade B
Conditions
Only in IBS symptoms: what the evidence supports
None.
Only in Probiotics
- IBS May improveEvidence grade B
What each entry says about the other
- IBS symptoms: what the evidence supports’s entry · Goes with: Grade B
Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.