It has a high content of soluble fibre (galactomannan with galactose and mannose in the ratio of 1:1.02). From the current understanding of functional foods, fibre plays an important role by its property of non digestibility and viscosity.

It is demonstrated that viscosity plays an important role in digestion of starch and absorption of glucose from intestine to blood. This particular type of soluble fibre becomes highly viscous when mixed with water and lines the walls of the stomach. It reduces the absorption of glucose from intestine to blood and ensures that there is no sudden peak or rush of glucose into the blood stream.

Profiber, which is made from natural Trigonella foenum-graecum, contains high levels of soluble fiber. Foods that contain large amounts of soluble fiber are known as bulk-forming laxatives.

When soluble fiber absorbs water in the intestines, it expands, or increases in bulk. This expansion puts pressure on the intestines and triggers contractions that move stools through the intestines and promote bowel movements.