MOS (Mannan-oligosaccharides)
A prebiotic that supports gut health by promoting beneficial bacteria.
Also known as: Mannan-oligosaccharides
Overview
Mannan-oligosaccharides (MOS) are prebiotics derived from the cell wall of the yeast Saccharomyces cerevisiae. They work by preventing pathogenic bacteria from attaching to the intestinal wall and by stimulating the growth of beneficial gut bacteria. MOS is commonly used in animal feed to improve gut health and is also found in some human supplements.
Key Benefits
Enhances Gut Microbiome
MOS serves as a food source for beneficial bacteria like Bifidobacteria and Lactobacilli, helping them to thrive.
Inhibits Pathogens
It can bind to harmful bacteria, such as E. coli and Salmonella, preventing them from colonizing the gut.
Supports Immune Function
By improving gut health, MOS can indirectly support the immune system, as a large portion of the immune system resides in the gut.
Dosage & How to Take
Dosages for MOS in humans are not as well-established as in animals, but supplements typically provide 1-4 grams per day.
| Purpose | Dose | Notes |
|---|---|---|
| General Gut Health | 1-2g per day | Can be taken with a meal. |
| During Antibiotic Use | 2-4g per day | May help mitigate disruption to gut flora. |
Best Time to Take
Can be taken at any time of day.
With or Without Food
Can be taken with or without food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Powder | High | Mixing into drinks or food | Allows for flexible dosing. |
| Capsules | High | Convenience | Provides a pre-measured dose. |
Side Effects & Safety
Common
- May cause gas or bloating initially as the gut microbiome adjusts.
Rare
- None known in typical doses.
Contraindications
- Individuals with yeast allergies should use caution.
Interactions
May potentially interact with yeast-based supplements.
Scientific Research
Effects of mannanoligosaccharide on the composition of the gastrointestinal microflora in rats
MOS supplementation increased the population of beneficial bifidobacteria in the gut.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.