Lactic acid bacteria (LAB) are known for their biotechnological potential. Moreover, LAB are distinguished by amazing criteria: Adjusting the intestinal environment, inhibiting pathogenic microbes in the gastrointestinal tract, ability to reduce pathogen adhesion activity, improving the balance of the microbiota inside the intestine, capabilities of regulating intestinal mucosal immunity, and maintaining intestinal barrier function. 

Streptococcus thermophilus is most commonly taken by mouth to treat and prevent diarrhoea, constipation, diabetes, and many other conditions, but there is no good scientific evidence to support these uses.

Enterococci probiotics have been widely administered in humans and animals for treating diarrhoea and other indications. The EU council regulations 700/524/EEC and EG 1831/2003 allow the use of all Enterococcus species and strains in poultry, cattle, or pigs. In the USA, probiotics used as feed supplements, termed as direct-fed microorganisms, include six species of enterococci as safe; they include E. faecium but exclude E. faecalis.

Following are the cultures available: