This advanced, dairy-free supplement from OptiBac contains 5 extensively researched strains, such as L. acidophilus NCFMa and B. bifidum Bb-02, in an extra strength dose of 20 billion live microorganisms per capsule. This supplement contains 5 billion live cultures of Lactobacillus acidophilus NCFM, thought to be the most researched strain of acidophilus in the world. The OptiBac strains in 'For every day EXTRA Strength' (formerly known as 'For daily wellbeing EXTRA Strength') are some of the world's most researched and documented strains. All of the friendly bacteria in this supplement are scientifically proven to pass through stomach acidity to reach the gut alive. What's more, this natural supplement is free from sugars, fats and flavourings that may be found in other food drinks containing live cultures. How to use: As a food supplement 'For every day EXTRA Strength' (formerly called 'For daily wellbeing EXTRA Strength') can be given to adults and children (from 1 year upwards) with the following recommendations: Take one to two capsules daily with food, preferably breakfast, or as professionally directed.Drink plenty of water with your course of live cultures.For anyone unable to swallow capsules, the contents of the capsule can be mixed with a cold meal or beverage.OptiBac will not cause dependency, and may be used on an ongoing basis.