Lactobacillus acidophilus

Lactobacillus acidophilus is a lactic acid-producing bacterium that colonizes the intestinal wall, where it helps maintain the integrity of the gut barrier and supports a balanced microbiome. Research indicates that L. acidophilus can reduce symptoms of lactose intolerance, lower the incidence of antibiotic-associated diarrhea, and modulate the immune system by enhancing the activity of natural killer cells and promoting immunoglobulin A production. Several clinical trials have also shown modest reductions in total and LDL cholesterol with regular supplementation. As one of the most commercially available probiotic strains, it is found in yogurt, kefir, and a wide range of dietary supplements.