Across 3 studies, all reported small beneficial effects of Lactobacillus brevis SBC8803 on immune function, specifically enhancements in natural killer (NK) cell activity and secretory IgA levels. The evidence base is very small (only 3 studies, all reviews) and no study reported statistical significance or specific dose/duration data. No single population or dose range was consistently studied.
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. All included studies are reviews, not primary trials, and none reported statistical significance. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). No dose, duration, or form data were extractable, limiting practical applicability.
Lactobacillus brevis SBC8803 has also been shown to enhance natural killer (NK) cell activity and increase secretory IgA levels
Lactobacillus brevis SBC8803 was reported as a probiotic/postbiotic component with positive effects on human health, and the review notes that such components can affect the immune response by providing host defenses against infection or suppressing inflammation.
it was observed that citrus fruits have great potential for the development of functional foods due to their high acceptability and possibilities of development and application in various products.