Dandelion

The Essentials

The leaf is the most vitamin- and potassium-dense of the common bitter greens, with as much vitamin K as a small kale leaf and as much potassium per gram as most bananas.

Root and leaf do different jobs. The root is the classical liver and biliary herb, roasted, decocted or extracted. The leaf is the classical diuretic (makes you pass more urine), and a small human trial documented a measurable increase in urine volume within hours.

What Else to Know

The chemistry sits behind both. Sesquiterpene lactones such as taraxinic acid and taraxacoside drive the bitter taste and the digestive-stimulant action. Inulin fibre, up to 40% of the autumn root, feeds gut bifidobacteria.

The safety window is wide. Three cautions matter: Asteraceae-family allergy, the diuretic (makes you pass more urine) interaction lane of lithium and potassium-sparing diuretics, and blocked bile ducts, where every liver-opening bitter is off the table.