Synopsis

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

Lactiplantibacillus plantarum is a probiotic bacterium commonly found in fermented foods and used as a dietary supplement. Its use for supporting or treating colds (general upper respiratory tract infections) is primarily based on emerging scientific evidence rather than longstanding traditional use. Several clinical studies and reviews have investigated the role of L. plantarum and similar probiotics in enhancing immune function and reducing the incidence or duration of respiratory tract infections, including the common cold.

A handful of randomized controlled trials (RCTs) in adults and children have shown that L. plantarum supplementation can modestly reduce the duration and/or severity of cold symptoms, and in some cases, lower the incidence of colds compared to placebo. The proposed mechanisms include modulation of the gut microbiota, enhancement of mucosal immunity (such as increased production of secretory IgA), and anti-inflammatory effects.

However, the evidence is still limited in both quantity and quality. Many studies involve mixed probiotic formulations rather than L. plantarum alone, making it difficult to attribute the effects specifically to this strain. Additionally, variations in dosage, formulation, and study populations contribute to inconsistent results.

Overall, while there is scientific interest and some supportive evidence, the strength of evidence for L. plantarum in preventing or treating the common cold is moderate at best. It may offer mild benefit, but it is not a substitute for standard preventive measures or treatments. Larger and more rigorous studies are needed to confirm its efficacy and establish optimal usage guidelines.

More about lactiplantibacillus plantarum
More about Colds (general)

Other ingredients used for Colds (general)

Other health conditions supported by lactiplantibacillus plantarum

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