Lactobacillus

Lactobacilli, a probiotic, mainly colonize the small intestine. They are anaerobic bacteria and can survive when they come into contact with the air

There are many kinds of lactobacillus strains: -Acidophilus -Rhamnosus -[|Casei] -Bulgaricus -[|Plantarum] -Salivarius -[|Lactobacillus sporogenes] (tends to be the most universally effective w/out resistance)