No Benefit evidenceother

Prebiotic Fiber (Inulin/FOS) for Bloating

Rapid fermentation of inulin/FOS by colonic bacteria produces gas (CO2, H2, methane) as a direct byproduct — the same fermentation that improves stool frequency is what causes gas.

How strong is the research?

No Benefit evidence

Bloating and flatulence intensity increased at 5.0 g and 7.5 g/day agave inulin doses versus control, though composite GI-intolerance scores remained low.

How much to take

5–15 g

All uses of Prebiotic Fiber (Inulin/FOS)All supplements for Bloating

Other supplements researched for Bloating