Butyric Acid is one of the best stomach and microbiome repair substances available. It is mainly used by people who have suffered severe microbiome and stomach damage due to excessive oral antibiotic usage. Antibiotics destroy the gut flora and Butyric acid can repair the gut. As this acid is so concentrated, it is bound to a mineral or minerals. Most other Butyrate supplements bind it with Calcium which may be cheap, but it does harm to the microbiome and can cause calcification of arteries and organs. As a firm standing we will never add Calcium to our products unless crucial for health. Our MP Butyrate is Butyric acid bound with Magnesium Citrate and Potassium Citrate, as the Citrate forms add energy to the processes of the body.