The present disclosure relates to the use of thiosulfate to potentiate the anti-pathogenic effect of lactobacilli bacteria, the thiosulfate being in a quantity of at least 100 mg for 107 to 1010 CFU of lactobacilli. The disclosure also relates to a pharmaceutical composition including at least 100 mg of thiosulfate per gram, in combination with a Lactobacillus crispatus strain, and to its use in the treatment of urogenital infections such as vaginosis, candidosis and urinary tract infections.
