Buy Whole Foods Organic Psyllium Husks (500g)

What the brand says

Psyllium husks are also known as psyllium husks fibre, isabgol, or simply as psyllium. The husks are soluble in water, absorbing the water to make them mucilaginous when wet, this process in the body keeps you fuller for longer. Organic psyllium husks offer your body a significant boost of fibre. High fibre diets have long been linked with good gut health and aid healthy digestion. It can also be used as a regular dietary supplement to improve and maintain regular GI transit.