IBS: what the evidence supports

2 graded interventions for ibs, ranked by strength of evidence.

Overall grade: Grade B
Last revised: Jul 10, 2026; 2
graded outcomes: 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.

2 at grade B — 2 graded rows

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.

Outcome	Grade	Effect size	Agreement
ProbioticsStrain-specific	Evidence grade B	Unclear	mixed
Peppermint OilEnteric-coated	Evidence grade B	Unclear	mixed

ProbioticsEvidence grade B
Strain-specific
Unclearmixed
Peppermint OilEvidence grade B
Enteric-coated
Unclearmixed

What is uncertain

Read off the same rows as above. Nothing here is added that the entry does not itself record.

Studies disagree: Probiotics (mixed agreement); Peppermint Oil (mixed agreement).

The evidence in words

The evidence map

This is the ranked evidence for ibs: every compound in the knowledge base with a graded effect, best-supported first. Grades reflect replication and effect size, not popularity or marketing.

Best-supported

Probiotics (grade B) — Strain-specific · Peppermint Oil (grade B) — Enteric-coated

Weaker or unproven

Everything with a graded effect here clears at least grade B.

Goes with

ProbioticsGrade BEvidence grade B
Peppermint OilGrade BEvidence grade B

Entries that share this one's tags or conditions.

Allergic rhinitis: what the evidence supports3 graded interventions for allergic rhinitis, ranked by strength of evidence.Evidence grade B
Antibiotic-associated diarrhea: what the evidence supports2 graded interventions for antibiotic-associated diarrhea, ranked by strength of evidence.Evidence grade B
Anxiety: what the evidence supports6 graded interventions for anxiety, ranked by strength of evidence.Evidence grade B
Benign prostatic hyperplasia: what the evidence supports3 graded interventions for benign prostatic hyperplasia, ranked by strength of evidence.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 Jul 10, 2026. A grade is this entry's reading of the evidence, not medical advice.