Digestive supplement – Optibac Immune Support contains 5 billion live cultures of the strain L. paracasei CASEI 431®, which complements the natural gut bacteria. Extensively researched – L. paracasei CASEI 431® has been studied in over 20 clinical trials . With Vitamin C for immune function – with 80mg of Vitamin C per capsule, to help maintain normal function of the immune system, contribute to our resistance to infection, and reduce tiredness and fatigue. Scientifically proven – high quality friendly bacteria shown to survive stomach acidity and reach the gut alive, where over 70% of the body’s immune cells reside. Specific strain action L. paracasei CASEI 431® has been shown to stimulate immune system responses and increase immune cell activity. For daily use – high-quality, daily immune support in just one easy-to-swallow capsule. Natural and vegan – vegan, dairy free and gluten free, with absolutely no artificial flavourings or colourings. Highly recommended from the UK’s most trusted & recommended brand of friendly bacteria supplements, as determined in an independent survey of 1000 British women+.