Evidence supporting the use of: Lactobacillus (various species)
For the health condition: Allergies (respiratory)

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Lactobacillus species, a group of probiotic bacteria, have been studied for their potential role in modulating immune responses and supporting the management of respiratory allergies, such as allergic rhinitis and asthma. The rationale behind their use is based on their ability to influence gut microbiota composition and, subsequently, the immune system, potentially reducing hypersensitivity reactions.

Several randomized controlled trials (RCTs) and meta-analyses have explored the efficacy of various Lactobacillus strains (e.g., L. rhamnosus, L. casei, L. paracasei) in alleviating symptoms of allergic rhinitis and other respiratory allergies. Some studies have found modest improvements in symptom scores, quality of life, and markers of inflammation in patients taking Lactobacillus-containing probiotics compared to placebo. For example, a 2015 meta-analysis published in International Forum of Allergy & Rhinology found that certain probiotic strains may reduce nasal symptoms and improve quality of life in allergic rhinitis, though the effect sizes were small and strain-specific.

However, the overall quality of evidence is limited by small sample sizes, heterogeneity in probiotic strains and doses, and inconsistent findings across studies. Guidelines from major allergy organizations do not currently recommend probiotics as a standard treatment, citing insufficient evidence. In summary, while there is some scientific evidence supporting the use of Lactobacillus for respiratory allergies, it is modest and not universally accepted, meriting a moderate-low evidence rating.

More about Lactobacillus (various species)
More about Allergies (respiratory)

Products containing Lactobacillus (various species)

We currently have no products on Vitabase that contain this ingredient.