President Dwight D. Eisenhower announced the Eisenhower Doctrine in January 1957, and Congress approved it in March of the same year.
Tribulus terrestris is an annual plant in the Caltrop Family (Zygophyllaceae) widely distributed around the world, that is adapted to grow in dry climate locations in which few other plants can survive.It is an invasive species in North America.ne study found that administration of Tribulus terrestris extract can produce statistically significant increases in levels of testosterone, dihydrotestosterone and dehydroepiandrosterone, and produces effects suggestive of aphrodisiac activity.
Expert Rating: 2.5 / 5.0. Bulgarian Tribulus is an herb commonly used in male sexual performance enhancement supplements. Also known as âBulgarian Tribulus terrestris,â this herb has been clinically proven to increase the number and quality of sperm within male users.