Are multi-strain products better than single-strain probiotic products?

Multi-strain products containing several strains in high doses do not necessarily have a better effect than a single-strain product. Important criteria when choosing a probiotic product are:

• The probiotic bacteria must be defined on strain level

• The probiotic product must have been tested in human clinical studies, with the same dose and with the same bacterial strain(s) as in the commercial product.