Potato Resistant Starch
A starch that behaves like fibre, present at 100 mg and working alongside inulin on the prebiotic side of the formula.

Potato Resistant Starch in the SodaTide Formula
A starch that behaves like fibre, present at 100 mg and working alongside inulin on the prebiotic side of the formula.
Fermentable fibre · 100 mg
About Potato Resistant Starch in SodaTide
What Resistant Starch Is
Most starch is broken down into glucose in the small intestine. Resistant starch resists that process and passes through to the colon intact, where it is fermented by gut bacteria.
In other words, it is a starch that behaves like fibre. Potato is one of the common sources, and SodaTide lists potato resistant starch at 100 mg.
Why It Is in SodaTide
It provides a second fermentable substrate alongside chicory root inulin. Different fibres are fermented by different organisms and in different parts of the colon, so including two rather than one is a considered choice rather than padding.
Together they make up 311 mg of the 347 mg total, meaning roughly 90% of the formula by weight is prebiotic material.
What the Research Covers
Resistant starch has been examined in relation to digestive health, fermentation and the production of short-chain fatty acids, particularly butyrate.
As with everything on this site, that is research on the ingredient rather than on the finished SodaTide capsule.
You can also get it from ordinary food
Resistant starch forms naturally when cooked potatoes, rice or pasta are cooled — a process called retrogradation. Slightly green bananas, legumes and oats also contain it. A potato salad made from cooled potatoes genuinely contains more resistant starch than a hot one.
Practical Notes
- Like any fermentable fibre, it can cause gas or bloating when you first add it. This typically settles within a week or two.
- Drink the full glass of water the label specifies — fibre needs it.
- If you have a serious digestive condition, discuss added fibre with your doctor before starting.
How It Fits the SodaTide Formula
It broadens the prebiotic base so the probiotic strains and existing gut population have more than one substrate to work with. See the full formula breakdown.
Background reading
The Other SodaTide Ingredients
Start Your SodaTide Routine
One capsule a day with a full glass of water, kept in the fridge. Gut balance builds gradually, so give it several weeks — the 60-day guarantee exists to make that possible.
From $49 per bottle on the 6-bottle bundle, with free shipping.