Psyllium husk is a natural fiber derived from the seeds of the Plantago ovata plant. It is commonly used as a dietary supplement to promote digestive health and relieve constipation. When mixed with water, psyllium husk expands and forms a gel-like substance, which helps to bulk up stool and facilitate its passage through the intestines. In addition to its digestive benefits, psyllium husk can also aid in lowering cholesterol levels and managing blood sugar. It is often found in various health products, including fiber supplements and laxatives, making it a popular choice for those seeking to improve their overall health.