Feeds good gut bacteria to support digestive health.
Effective Dose
2-5 grams daily
Onset
Days
Cost
Budget
Cycle
Can be taken daily long term.
7 things you need to know
What it does
Feeds good gut bacteria to support digestive health.
Worth it?
7/10. FOS is a decent prebiotic fiber that effectively nourishes beneficial gut bacteria, potentially improving digestion and overall gut health. It may not be as potent as some other prebiotic options, but it's generally helpful, especially for those with low fiber intake.
How much to take
2-5 grams daily
Price
Cheap (under $15/month)
How fast it works
Builds up over days to weeks
Safety
Check if: gas, bloating
What people say
Users may experience improved digestion, increased regularity, and potentially reduced bloating over time. Initial use may cause some gas or discomfort, which usually subsides as the gut microbiome adjusts.
FOS can be naturally extracted from plants like chicory root, asparagus, and onions.
"Users may experience improved digestion, increased regularity, and potentially reduced bloating over time. Initial use may cause some gas or discomfort, which usually subsides as the gut microbiome adjusts."
Research backing for this ingredient
Some evidence, more research needed
Limited
Not yet
Generally accepted with some debate
"FOS is a well-studied prebiotic fiber with a good amount of evidence supporting its ability to promote the growth of beneficial gut bacteria. While individual responses may vary, it's generally considered effective for improving gut health at reasonable doses."
FOS acts as a food source for beneficial bacteria in your gut, helping them thrive and improve your overall digestive health. This can lead to better regularity, reduced bloating, and potentially enhanced nutrient absorption.
Products below minimum dose are likely ineffective
When
Any time
How
2-5 grams daily
Food
Can be taken with or without food. Some find it helpful to take it with a meal to reduce potential gas or bloating.
Noticeable effects on digestion and regularity may take several days to a week.
Can be taken daily long term.
Check for specific interactions.
Prebiotic Fiber (FOS) is categorized as a compound.
Scientific consensus score: 7/10.
Evidence quality: MODERATE.
Add Prebiotic Fiber (FOS) to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.