Chemical name: Tribulus lanuginosus.
Other Names: Abrojos de tierra, aburejo, alborjos, alforjos, ambrojos, arvojos, caxals de vella, duros, encogeperros.
Active Ingredients: Steroidal saponins
Flavonoids
Traces of alkaloids.
The fruits contain a substance of glycoside nature, not very well defined.
Parts Used: Fruit