Across 3 review-level studies, all reported small beneficial effects of Lactobacillus brevis SBC8803 on immune function, specifically enhanced natural killer cell activity and increased secretory IgA levels. However, none of the findings were statistically significant, and the evidence base is limited to narrative reviews rather than original clinical trials.
Caveats: All studies are narrative reviews with no original data, no dose information, and no statistical significance reported. Only one study specified a population (psoriasis patients). Effect direction is consistent but based on very low-quality evidence.
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.