Optibac For Every Day Max is a premium, award-winning supplement that supports gut and immune health with a high-strength, high-quality probiotic. It contains 75 billion CFU of three extensively studied strains, including L. acidophilus NCFM, which is the most researched acidophilus strain in the world. This supplement is free from prebiotic FOS and may be suitable for those with IBS. It is a vegan alternative to dairy-based products and is designed to complement your body's natural gut bacteria. The formula is highly researched and has been proven effective for digestive health concerns such as occasional constipation or bloating, as well as immune health support and allergy relief.