Fructooligosaccharides (FOS) are oligosaccharide fructans that are used as alternative sweetener. This is also called oligofructan or oligofructose and occurs naturally in plants such as garlic, onion, banana, chicory, artichoke, etc. They contain linear chains of fructose units associated by beta bonds. The number of fructose units can range from 2 to 60 and end in glucose unit. It has a number of amazing attributes that includes- low sweetness intensity, high soluble dietary fibre and are calorie free. It has a number of physiological effects, which mainly include improved mineral absorption, decreased level of serum cholesterol, low carcinogenicity, etc. This helps in reducing constipation an keeps your body functional under control.