NutriStack
Symptom·Digestive·Reviewed May 30, 2026
Supplements for IBS with diarrhea (IBS-D) support.
When ibs with diarrhea (ibs-d) support is the complaint, these are the supplements most often associated with it in the NutriStack library, ranked by how directly each one targets it and by the strength of the evidence.
Ranked by relevance, top first.
Relevance reflects how directly each supplement targets this symptom in the NutriStack map. Evidence is the supplement’s own rating. Open any name for the full profile.
- 01ProbioticsModerate93% match
Specific strains can normalize gut motility, reduce visceral hypersensitivity, and improve stool consistency in IBS-D.
SuggestedMulti-strain capsule with documented IBS strains (e.g., Bifidobacterium infantis 35624), daily - 02Saccharomyces BoulardiiModerate71% match
This probiotic yeast supports the gut barrier and can shorten and firm loose stools, especially when diarrhea is the dominant feature.
SuggestedCapsule, 5 to 10 billion CFU daily - 03L-GlutamineLimited60% match
Glutamine is a primary fuel for enterocytes and may help restore gut barrier integrity in post-infectious IBS-D.
SuggestedPowder, 5 g three times daily - 04Psyllium HuskModerate55% match
Soluble fiber forms a gel that adds bulk and slows transit, helping firm loose stools and regulate bowel habit.
SuggestedPowder, start 3 to 5 g daily and titrate up with plenty of water - 05Lactobacillus RhamnosusLimited50% match
This strain can reinforce the gut barrier and modulate immune signaling, with supportive data for loose-stool diarrhea.
SuggestedCapsule, 10 billion CFU daily - 06Ginger ExtractLimited45% match
Ginger has carminative and mild antispasmodic properties that may ease cramping and associated nausea, though it does not slow transit the way bulking fiber does.
SuggestedStandardized extract capsule, 250 to 500 mg with meals
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