Psyllium, also known as plantago ovata husk, is a natural source of plant fibre. The raw material comes in the form of whole husks or powder, ranging in colour from light beige to dark brown, with a typical slightly slimy taste and smell.

Psyllium husks are characterised by a high content of soluble fibre, which swells on contact with water and forms a gel-like structure. This makes psyllium valuable in the production of functional foods and dietary supplements that support proper digestion.