FOS, fructooligosacharrides


Fructooligosaccharides (FOS) are primarily extracted from the blue agave and found naturally in a variety of fruits and vegetables, including bananas, onions, chicory root, garlic, asparagus, jicama, and leeks. These sources are rich in plant sugars and serve as the foundation for FOS production.

Also Known As

Fructooligosaccharides are known by several names, highlighting their significance in nutrition and health:

  • FOS
  • Oligofructose
  • Oligofructan


FOS is widely utilized as a low-calorie sweetener in various food products. Beyond its sweetening properties, it serves significant functional roles in managing constipation, preventing traveler’s diarrhea, lowering high cholesterol levels, and functioning as prebiotics. By acting as food for beneficial bacteria in the intestine, FOS supports overall gut health and digestion.


Fructooligosaccharides are composed of short chains of plant sugars, making them an exceptional choice for a low-calorie sweetener. Their ability to pass undigested into the colon is where they have a profound impact, as they increase bowel mass and promote the growth of beneficial bacteria. This prebiotic effect is crucial for maintaining a healthy gut microbiome.

  • Utilized as a prebiotic to support beneficial bacteria in the gut
  • Helps in managing digestive issues such as constipation and traveler’s diarrhea
  • Used as a low-calorie sweetener in various food products

Common Dosage

The recommended dosage for fructooligosaccharides ranges from 4 to 15 grams daily. This dosage can support digestive health and maintain beneficial gut bacteria levels without adverse effects.


Fructooligosaccharides, with their versatile roles as a low-calorie sweetener and a prebiotic, are integral to supporting digestive health and enhancing the growth of beneficial gut bacteria. Derived from natural sources such as the blue agave and a variety of fruits and vegetables, they offer a healthful alternative to traditional sweeteners and have therapeutic benefits in managing various digestive conditions.

  • Derived from natural sources, supporting a healthy diet
  • Serves dual purposes as a sweetener and a prebiotic
  • Recommended dosage ranges from 4 to 15 grams daily for optimal benefits

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