Plantago psyllium, commonly known as psyllium, belongs to the Plantaginaceae family and is native to dry, sunny, semi-arid climates. Its seed husk is odorless, mildly sweet to bland, and mucilaginous. Medicinally, psyllium husk is known for its bulk-forming laxative, demulcent, anti-inflammatory, cholesterol-lowering, and glycemic-supportive properties. Its most notable constituents are highly soluble arabinoxylan-rich mucilage polysaccharides, along with fiber fractions that contribute to its gel-forming action. Clinically, psyllium husk is used in constipation, diarrhea, irritable bowel syndrome, hemorrhoids, hyperlipidemia, postprandial blood sugar support, bowel regularity. A meta-analysis PMID: 30239559 found that psyllium significantly lowered LDL cholesterol and other atherogenic lipid markers, supporting its use for cardiovascular and metabolic health. Historically, its name comes from the Greek psyllion, meaning “flea”, referring to the small, flea-like appearance of the psyllium seeds.