Hepatica Bulgarian Tribulus Original 120 capsulesPreparation Bulgarian Tribulus Original contains an extract of the herb tribulus terrestris containing steroidal saponins . They contribute to the secretion of testosterone , a natural sex hormone that supports the development of muscle mass and physical strength . Tribulus Terrestris is a small plant, blooming with small yellow flowers. Although originally from the Old World, it has gradually spread to other areas of the globe with a prevailing warm