Antibiotics are an important means of treating infections and diseases caused by bacteria, such as pneumonia, strep throat or urinary tract infections. Antibiotics work by killing harmful bacteria. Since their introduction in the mid-twentieth century, antibiotics have saved millions of lives.
Bacteria living in the large intestine (collectively known as the ‘microbiome’) are essential for healthy functioning of the gut. A person with a healthy microbiome has many different types of bacteria that all work together to help the gut function properly.