One week flat' is a food supplement containing natural bacteria, in powdered sachets to be taken daily as a one-week course. This can be taken once a month, or as frequently as desired. This supplement has been created especially for those wishing to take a short-term course of live cultures. It contains high quality, researched strains such as Lactobacillus casei Rosell-215, and is advised to be taken consecutively for seven days. Each sachet provides 5 billion live microorganisms that will survive through stomach acidity, and are guaranteed until end of expiry. 'One week flat' is gluten-free and therefore may be suitable for those with bloating.Lactobacillus acidophilus Rosell-52: Acidophilus is a natural resident of the intestinal microflora; this strain of acidophilus from OptiBac has been shown to survive gastric acidity and biliary salts, and to reach the intestines without damage. Bifidobacterium bifidum Rosell-71: This well-researched strain has been shown to reach the gut alive. Lactobacillus casei Rosell-215: This is of an extensively studied species naturally residing in the intestinal flora; this strain from OptiBac has been researched in its ability to resist gastric acidity and bile salts in order to reach your small and large intestines alive. Lactococcus lactis Rosell-1058: This strain is extracted from the kefir culture, and has been scientifically proven to reach the gut alive. Fructooligosaccharide fibres (FOS) provide a source of natural fibre.It is important to note that this supplement, unlike many other live cultures products, does not require refrigeration due to improvements in freeze drying techniques and the strains within the product that are naturally robust to survive harsher conditions.Available in two pack sizes of 7 and 28 sachets of live cultures. Each sachet provides a count of over 5 billion natural bacteria.This is a food supplement and it is not intended to prevent, treat, nor diagnose any medical conditions.About Optibac ProbioticsThe OptiBac Probiotics brand was created in 2004 by three siblings and their father, all with a passion for health & wellbeing. The brand specialises entirely in live cultures and considers this to be their expertise, with a particular emphasis on how different strains (specific types of live cultures) work in different ways. The strains found within OptiBac Probiotics are of the highest quality, and each strain undergoes rigorous testing - so you can be confident you'll find a high quality supplement for your individual needs.OptiBac Probiotics has partnered with some of the world-leading institutes in the field, and is dedicated to developing an expert range of the highest quality. The range boasts some of the most researched strains in the world. The company are completely transparent when it comes to the make-up of their products, and, unlike many others, they cite not only the microorganism's family and species, but the strain as well. OptiBac Probiotics is proud to be the brand that introduced a number of strains to the UK, including pure Saccharomyces boulardii, Bifidobacterium lactis BB-12, Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14.Every day, customers from all around the world review OptiBac Probiotics and comment on how much they enjoy using the products. Why not try them yourself and see what you think?