Dandelion Powder:

"Dandelions... leaves are high in vitamin A, vitamin C and iron, carrying more iron and calcium than spinach.

The dandelion is approved by the Commission E for dyspeptic, liver and gallbladder complaints, infections of the urinary tract, and loss of appetite. Other unproven uses include treatment of disturbances in bile flow, inflammation of the efferent urinary tract, dyspepsia, hemorrhoids, congestion in the portal system, gout, rheumatic disorders, eczema and other skin disorders.

source - Wikipedia.org