A prebiotic fiber that selectively feeds your good gut bacteria, especially Bifidobacteria.
FOS is short-chain (2-8 sugar units). Inulin is long-chain (10-60 units). FOS ferments faster in the upper colon. Inulin reaches further down. Both are prebiotics from the same family.
Bacteria produce gas when they ferment FOS. It's a sign of active fermentation. Usually decreases as your microbiome adapts in 1-2 weeks.
No. Clinical effects start at 3-5g (3000-5000mg). If your supplement has 100-500mg, it's there as a minor ingredient, not a therapeutic prebiotic.
Click through to the studies bar for the evidence base.
See the dosing guide below.
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Some ingredients build up over weeks. Others act fast.
The compound effect of consistent dosing.
Check the cautions section if you have a pre-existing condition.
Some ingredients you feel. Others just work in the background.
Great combination. FOS feeds the probiotic bacteria. This is called a synbiotic.
FOS is a FODMAP and can worsen symptoms in IBS. Start very low or avoid if you're FODMAP-sensitive.
Yes. Found naturally in many foods including garlic, onion, and banana. Commercial FOS is extracted from sucrose using enzymes or from chicory root.
Yes. The short-chain fatty acids produced during fermentation increase mineral solubility in the colon, improving calcium and magnesium absorption.
Most research uses 5.0g daily. Below 3.0g, you're probably wasting money. Above 10.0g, no extra benefit. The curve plateaus. Safe upper limit ~ 20.0g.
Short-chain fructose polymers that resist digestion in the upper GI tract. Selectively fermented by Bifidobacteria in the colon, producing short-chain fatty acids (butyrate, propionate, acetate) that nourish colonocytes and lower gut pH.
Fructooligosaccharides has emerging evidence.
Chicory root · Garlic · Onion · Banana · Asparagus
Two methods: (1) Enzymatic synthesis from sucrose using fructosyltransferase, or (2) Partial enzymatic hydrolysis of chicory inulin.
Fructooligosaccharides interacts with other supplements and meds. The analyzer flags interactions, dose mismatches, and timing collisions across your whole list.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.