Bifidobacteria (Bifidobacterium Longum) + Lactitol + Lactobacillus acidophilus + Streptococcus thermophilus is a synbiotic preparation that combines three probiotic bacterial strains — Bifidobacterium longum, Lactobacillus acidophilus, and Streptococcus thermophilus — with lactitol, a non-absorbable sugar alcohol that acts as both an osmotic laxative and a prebiotic. The combination is used to support gut microbiota balance, manage constipation, support gut function during and after antibiotic courses, and provide adjunctive nutritional support in hepatic encephalopathy.