An apple halved to show pale flesh and pips, with a curl of peel beside it. ← The FormularyDigestion

Apple pectin

Also known as Pectin, soluble fibre
BEVIDENCE

Soluble fibre, doing the unremarkable thing soluble fibre does.

The honest take
In a protein powder it is there for texture and a little satiety. Anyone selling it as a digestive intervention at this dose is rounding up.
What it is
The soluble fibre that makes jam set, extracted from apples.
How it works
Forms a gel in water and ferments in the colon.
What it does
Adds viscosity, slows gastric emptying slightly, feeds gut bacteria.
Who it's for
It is a formulation ingredient, not a reason to buy.
How to use it
As the product directs.
What to expect
A slightly thicker shake.
The research
Fibre works by grams per day. Count the whole diet, not the scoop.

Read the labelFibre added suddenly and in quantity causes bloating. Not an issue at the amount in a protein serving.

Evidence grades describe how well an ingredient is studied — A well-supported, C emerging — not a promise of results. Educational, not medical advice. Doses are typical ranges; follow the label on the product.