Dietary Supplement12 Billion‡ 12 Strain Formula Intestinal & Digestive Health Isura – Non-GMO * Mass Spec Documentation – Lab Tested Purity & Potency Guaranteed 12/12 Ultimate Probiotic provides 12 proprietary strains with a potent concentration of 12 billion active cells that work synergistically, guaranteeing maximum activity and efficacy. Recommended by Dr. Michael Murray, one of the world’s leading experts on natural medicine. Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada. ‡Guaranteed minimum 12 billion active cells per capsule at expiry date. ‡Guaranteed minimum 18 billion active cells per capsule at manufacture date.