Biokult Boosted Probiotic (30). Extra Strength. Digestive & Immune Support Probiotic. Bio-Kult Boosted. Bio-Kult Boosted is an advanced multi-action formulation designed to target both the Immune System and Digestive Tract. With 4 times the concentration of bacteria compared to Bio-Kult Advanced, and added vitamin B12, Bio-Kult Boosted gives you the confidence that you are supporting the normal functioning of the immune system.. Live Bacteria Cultures:. Lactobacillus casei PXN® 37™. Lactobacillus plantarum PXN® 47™. Lactobacillus rhamnosus PXN® 54™. Bacillus subtilis PXN® 21®. Bifidobacterium bifidum PXN® 23™. Bifidobacterium breve PXN® 25™. Bifidobacterium longum PXN® 30™. Lactobacillus acidophilus PXN® 35™. Lactococcus lactis ssp. lactis PXN® 63™. Streptococcus thermophilus PXN® 66™. Bifidobacterium infantis PXN® 27™. Lactobacillus delbrueckii ssp. bulgaricus PXN® 39™. Lactobacillus helveticus PXN® 45™. Lactobacillus salivarius PXN® 57™