Orthosiphon stamineus Benth. is an important plant in traditional folk medicine, originating from south-eastern Asia and containing several flavonoids, terpenoids and essential oils; the main compound is sinensetin, a methylated flavone. The main health properties connected to the extract of orthosiphon are related to its diuretic effect, to an increased urogenic activity and to renal protective effect, together with anti-inflammatory and hypotensive functions.