If you ever had problems with your digestive system, or you have taken antibiotics, you probably have received the advice to take probiotics. Broadly speaking, probiotics promote healthy digestive tract and a healthy immune system, by improving or restoring the gut flora. However, before diving deeper, it is good to know what they are exactly. According to the International Scientific Association for Probiotics and Prebiotics (ISAPP), a probiotic is defined as “live microorganisms that, when administered in adequate amounts, confer a health benefit on the host”. In other words, probiotics are live bacteria and yeasts that are good for you, especially for your digestive system. Probiotics are often called “good” bacteria and as you already know - your body is full of bacteria, both good and bad.