Abstract
The use of probiotics and obtained results from some studies and meta-analysis made it essential to search for the literature about probiotics. For this reason, the current review triesto explain and focus on gastrointestinal tract. On the other hand, reliable designing of probiotics takes into consideration the type of strain and diseases, which are discussed, in the current review.
Keywords: Probiotics, gastrointestinal tract, bacteria, diseases.
Graphical Abstract