Inulin

What it is

Inulin is a soluble dietary fibre extracted from natural chicory root. Because human digestive enzymes cannot break down inulin, it travels through your stomach unchanged and reaches your lower gut intact. There, it serves as a nutrient-dense feast for beneficial gut bacteria, helping your digestive system run smoothly.

Also known as: Chicory Root Extract, Prebiotic Inulin, Inulin Fiber

Key benefits

• Feeds friendly Bifidobacteria species in your gut, helping good bacteria flourish.
• Supports bowel regularity and comfortable stool consistency, so you feel lighter and regular.
• Helps your body absorb essential minerals like calcium and magnesium for strong bones.
• Supports steady digestion and metabolic balance by encouraging healthy gut transit time.

Amplified by probiotics

Inulin acts as a premium food source for beneficial bacteria like Bifidobacterium and Lactobacillus. When microencapsulated probiotics ferment inulin in your gut, they produce nourishing compounds that lower gut pH. This acidic environment keeps bad bacteria in check, protects your gut lining, and helps you absorb minerals like calcium and magnesium more efficiently.

Typical dose

2–10 g/day

The evidence

Many human studies confirm that taking inulin increases good Bifidobacteria in the gut, keeps you regular, and helps you absorb minerals. Clinical research shows daily amounts between 2.5 g and 10 g support gut health comfortably (Gibson et al. 2017, Nat Rev Gastroenterol Hepatol; Vandeputte et al. 2017, Gut; Holloway L, et al. 2007, Am J Clin Nutr).

1. Gibson GR, et al. Expert consensus document: The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of prebiotics. Nat Rev Gastroenterol Hepatol. 2017;14(8):491-502. PubMed ↗
2. Vandeputte D, et al. Prebiotic inulin-type fructans induce specific changes in the human gut microbiota. Gut. 2017;66(11):1968-1974. PubMed ↗
3. Holloway L, et al. Effects of oligofructose-enriched inulin on intestinal calcium absorption and bone turnover markers. Am J Clin Nutr. 2007;85(6):1559-1564. PubMed ↗

Safety & who should check first

Inulin has an excellent safety record and is well tolerated. High daily doses above 15 grams may cause temporary mild gas or bloating. Safe during pregnancy and breastfeeding, though anyone sensitive to fermentable fibres should start with smaller amounts.