About this product There are millions of bacteria inside each person, forming an internal world inside us which is often referred to as 'The Microbiome'. There is much scientific research being carried out into the world of the Microbiome and its potential impact on the rest of the human body. NutriGUT-D is a unique, all-in-one complex providing Saccharomyces Boulardii in combination with specific supportive good bacteria, Nutrigut Perilla Extract, L-Glutamine and Vitamin A. This product has been formulated by Natures Aid Nutritionists and is based on the latest research into the many benefits of supporting the MicroBiome. All of the ingredients have been selected based on the research behind them, and Vitamin A has been included for its contribution to a healthy immune system and the maintenance of normal mucous membranes.