The human colon is a home to a large and dynamic bacteria community. There are probably 400-500 different types of bacteria species, collectively known as "intenstinal microflora". Among them, there're beneficial bacteria and harmful bacteria. Beneficial bacteria play a key role in supporting well-being of the host. These bacteria produce no harmful substances while inhibit or suppress the growth and multiplication or harmful bacteria and thus creating a favourable intestinal environment in the host. Low levels of bebeficial bacteria may encourage the growth and activity of harmful bacteria including those of pathogenic ones and this may lead to weakened functions of gastrointestinal and immune system. Therefore, it is important to always maintain a proper balance of intestinal microflora composition.

H-BAY Shield contains Bifidobacterium longum BB536 and Bifidobacterium breve M16V as probiotics, two of the typical beneficial bacteria species residing in the human intestines. Bifidobacteria, the normal inhabitants of human colon, are one of the most recognized probiotics worldwide. They have been found as the predominant bacteria constituting the intestinal micro-flora of breast-fed infants. Bfidobacterium longum is the most common specials found in the human intestines of all ages wheras Bifidobacterium breve is naturally and widely distributed in the intestines of infants. Besides, H-BAY Shield also can contains prebiotics: FibregumTM and Galacto-Oligosaccharides (GOS), to fuel up the Bifidobacteria in order to support their growth and activity.