Toots & Trots / Does it matter?
Psyllium husk or inulin — does the type of fibre matter?
Both are sold on the same shelf as good fibre, and they do opposite things here. Psyllium is soluble and gel-forming: it soaks up water and can help slow and firm output, which is exactly the job most people want done. Inulin is a fructan that ferments fast, so for a lot of sensitive guts it means more wind and looser output. If a supplement isn't agreeing with you, the label is the first place to look.
Scores use a standard reference serving via the GASP model. Individual tolerance varies.
Yes — mainly because of gas.
If wind and bloating is a problem for you, Psyllium husk is worth trying. If you're tolerating Inulin / chicory root fiber without issues, the difference may not show up for you personally.
Try it on your own food
These ideas are a starting point — see how your actual meals and foods score.
More comparisons
Where the scores come from
- The GASP model — Gas, Agitation, Stool-loosening, Particle load
- Monash University FODMAP program — fermentable carbohydrate thresholds
- USDA FoodData Central — nutrient composition data
Scores are our modelled synthesis — not endorsed by these organisations.
Written and checked from lived experience with a J-pouch. Last updated June 2026. The GASP Score is a modelled estimate, not medical advice — always work alongside your own clinical team.
Scores are modelled estimates, not medical advice. Everyone's gut is different, and tolerance changes over time. Reintroduce foods one at a time, and follow your own medical team's advice.