MOS (Prebiotic)

A prebiotic that supports gut health by promoting beneficial bacteria.

Also known as: Mannan-oligosaccharides

other Names
Mannan-oligosaccharides
primary Benefits
Improves gut health, enhances immune function, supports digestion
common Dose
1-4 grams per day
best Form
Powder, capsules
timing
Can be taken anytime
safety Rating
Generally safe with a low risk of side effects.

Overview

Mannan-oligosaccharides (MOS) are prebiotics derived from the cell walls of yeast. They work by selectively feeding beneficial bacteria in the gut, helping to improve the gut microbial balance. MOS can also bind to and remove pathogens, further supporting a healthy digestive system.

Key Benefits

Improves Gut Microbiome

Promotes the growth of beneficial bacteria, such as Bifidobacteria and Lactobacilli, while inhibiting the growth of harmful bacteria.

Enhances Immune Function

By supporting a healthy gut, MOS can indirectly enhance the body's immune response.

Supports Digestive Health

May help to reduce the incidence of digestive issues and improve nutrient absorption.

Dosage & How to Take

The typical dose of MOS is 1-4 grams per day. It is often found in combination with probiotics or other digestive health supplements.

PurposeDoseNotes
Gut Health Maintenance1-2 gramsA good starting dose for general gut support.
Pathogen Binding2-4 gramsHigher doses may be more effective for binding to and removing harmful bacteria.

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

FormAbsorptionBest ForNotes
PowderHighEasy to mix into drinks or foodOften combined with other prebiotics or probiotics.
CapsulesHighConvenience and precise dosingA good option for those who prefer not to taste the powder.

Side Effects & Safety

Common

  • Gas
  • Bloating

Rare

  • Allergic reactions

Contraindications

  • None known.

Interactions

None knownMild

MOS is not known to interact with any medications.

Scientific Research

2013Poultry Science

Effects of mannanoligosaccharides on the cecal microbial community and intestinal morphology of broiler chickens

MOS supplementation was shown to increase the abundance of beneficial bacteria and improve intestinal structure in broiler chickens.

2004Journal of Animal Science

The effect of mannan-oligosaccharide on the growth performance, blood parameters, and gut health of weanling pigs

MOS supplementation improved growth performance and gut health in weanling pigs.

Food Sources

Products With MOS (Prebiotic)

1 product in our database contains this ingredient

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.