Tribulus terrestris has long been a constituent in tonics in Indian ayurveda practice, where it is known by its Sanskrit name, "gokshura." [5] It is now being promoted as a booster for the purpose of increasing sex drive. Its use for this purpose originated in Eastern Europe in the 1970's. Independent studies [6] have suggested that Tribulus terrestris extract slightly increases levels, though leaving them in the normal range. Chemical control is generally recommended for home control of puncture vine. There are few preemergent herbicides that are effective. Products containing oryzalin, benefin, or trifluralin will provide partial control of germinating seeds. These must be applied prior to germination (late winter to midspring). Action: To subdue hyperactivity of the liver, to promote blood circulation, to dispel wind, to clear the eye of opacity, and to arrest itching. Indications: Headache and dizziness, distending pain in the chest and costal regions; cessation of milk secretion, mastitis; redness of the eye with formation of nebula; urticaria with itching.