There are several important factors to consider when seeking a high quality probiotic supplement. Quantity of live bacteria, including several different and well-researched bacteria strains as well as acid and bile resistance are all attributes of high quality probiotics, according to Natural News.
Look for a probiotic supplement that includes at least 15 billion live bacteria at the time of expiration. This ensures that sufficient amounts of live bacteria make it through the gastrointestinal tract. A product with acid and bile resistance will further facilitate increased amounts of bacteria surviving. Products from reputable brands who provide research and access to thorough product information are often more reliable.