Home Herbs Index K Khas (Vetiveria zizanioides) (Cuscus Grass) AllABCDEFGHIJKLMNOPQRSTUVWXYZ Khas (Vetiveria zizanioides) (Cuscus Grass) Pharmacological action: Exhilarant, cardiac and brain tonic. Medicinal use: Effective in palpitation, cardiac debility, fever, inflammation and irritability of stomach and thirst.