Guaranteed 30 billion potency of the unique, extensively tested LAB4 complex of friendly bacteria per daily intake to end of shelf life if stored correctly. Contains 150mg of Lactobacillus acidophilus (strains CUL-60 and CUL-21). Human compatible strains that are bile and acid tolerant with high adherence ability and a proven history of safe use in humans. Hypoallergenic and dairy-free. Vacuum packed to maintain the stability of these fragile organisms. Contains Fructooligosaccharides (F.O.S.) derived from chicory. Tried and tested for WADA (World Anti-Doping Agency) banned substances to ensure that they are safe for professional sports persons to use. Approved by the Vegetarian Society.