The herb is available as dried leaves and flowers, a concentrated liquid or tincture extract, in capsules and ointment and prepared tea.

BBC: Herb 'helps ease depression'

They extract the lumps that yield 165, 000 barrels of liquid fuels a day, from high-octane airplane petrol to superclean diesel for cars, at Sasol's big Secunda plant, 80 kms southeast of Johannesburg.

FORBES: Overcoming Isolation