Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Bifidobacterium longum is a well-studied probiotic strain that has been investigated for its potential benefits in managing symptoms of Irritable Bowel Syndrome (IBS). Clinical research, including several randomized controlled trials (RCTs), suggests that certain strains of B. longum may help alleviate IBS symptoms such as abdominal pain, bloating, and irregular bowel movements. For example, a 2017 double-blind, placebo-controlled trial published in Gastroenterology found that Bifidobacterium longum NCC3001 significantly improved global IBS symptoms and quality of life compared to placebo in patients with IBS. The proposed mechanisms for these effects include modulation of the gut microbiota, strengthening of the intestinal barrier, and modulation of immune responses and gut-brain signaling.

However, while there is scientific validation for its use, the strength of evidence is moderate (rated 3 out of 5) because not all studies show consistent benefit, and the efficacy may depend on the specific strain used, the formulation, and the IBS subtype (e.g., IBS-D, IBS-C, or mixed). Meta-analyses indicate that B. longum is among the more promising probiotic strains for IBS, but further large-scale, high-quality studies are needed to standardize dosing and identify which patient populations benefit most. Overall, B. longum is considered a scientifically validated, but not universally effective, adjunct for IBS management.

More about bifidobacterium longum
More about Irritable Bowel Syndrome

Other ingredients used for Irritable Bowel Syndrome

Other health conditions supported by bifidobacterium longum

Products containing bifidobacterium longum

Nature's Sunshine Bifidophilus Flora Force
Nature's Sunshine Eleven Elevated (NutriBiome)
Nature's Sunshine Probiotic Eleven
Nature's Sunshine Sunshine Heroes Probiotic Power