Psyllium husk is a type of soluble fiber derived from the seeds of the Plantago ovata plant, commonly known as the psyllium plant. Psyllium husk is exceptionally rich in soluble fiber.

Psyllium husk is widely used as a natural laxative to relieve constipation and promote regularity. Psyllium husk may help lower LDL cholesterol levels, which can reduce the risk of heart disease. It may also have benefits for people with diabetes by helping to regulate blood sugar levels.

Psyllium husk is commonly consumed in powdered form, often mixed with water or other liquids.