According to the World Health Organization (WHO), probiotics are food products that contain homogeneous or heterogeneous cultures of live microorganisms and confer health benefits when taken in adequate amounts. Strain-dependency means that a particular strain has beneficial effects in specific cases. This is why it is recommended to use different strains, depending on the indication. When choosing a probiotic, make sure the full, three-element name of the strain is provided, for instance Lactiplantibacillus plantarum LP01.