Tribulus terrestris is an herbal supplement mostly taken by men for enhancing sex drive and performance, and for increasing lean muscle mass. This plant has the nicknames goathead and puncture vine because of its very sharp spines. No noteworthy side effects are linked to Tribulus terrestris usage, according to eMedTV, but the website cautions there is little research on the safety of this herb. Consult with a qualified health care provider before taking tribulus supplements.
Features
Tribulus terrestris is not native to the Americas, where it is an invasive species and is mainly considered a noxious weed. Not only can the spines puncture skin and tires, the leaves contain chemical compounds that can be toxic to livestock, according to the University of California Statewide Integrated Pest Management Program. Tribulus is common in regions with hot summers, where it grows on agricultural land and other places with disturbed or very compacted ground, such as orchards, railroads, roadsides and walkways.
Uses
The herb has many traditional uses around the world, says physician Ray Sahelian, who has a website devoted to natural supplements. People have used tribulus to improve sexual function, to lower blood pressure and cholesterol levels, and to treat headaches, constipation and liver and urinary tract disorders. Some bodybuilders take tribulus for testosterone boosting to build muscle and strength, according to BodybuildingForYou.com. Research published in the February 2008 issue of the Journal of Zhejiang University-Science B found that Tribulus terrestris is effective against numerous pathogenic microorganisms.
Possible Side Effects
Although Tribulus terrestris supplements are not associated with side effects, its purported benefits could also lead to related negative effects. If tribulus does increase androgens, or male hormones, as claimed, related side effects could include increased body or facial hair, lowering of the voice in women, increased risk or worsening of enlarged prostate or prostate cancer, and worsening of other hormone-related cancers, cautions eMedTV.
Pregnancy Considerations
Research on the safety of Tribulus terrestris for pregnant women is lacking, according to eMedTV. Its effects on sheep who eat the plant wild indicate that tribulus can lead to negative effects on the fetal brain. If Tribulus terrestris increases testosterone and other androgens, it could result in masculinization of female genitals during fetal development.
Supplement Regulation
The U.S. Food and Drug Administration does not regulate dietary supplements as closely as it does medications. Tribulus terrestris supplements may not be as effective as manufacturers promote them to be, cautions eMedTV, and dietary supplements do not always contain the levels of ingredients stated on the label. Buying only from reputable manufacturers can prevent problems.
References
- University of California Statewide Integrated Pest Management Program: Puncturevine
- Journal of Zhejiang University-Science B: Antibacterial and Antifungal Activities of Different Parts of Tribulus Terrestris
- Ray Sahelian, M.D.: Tribulus Terrestris
- BodybuildingForYou.com: Tribulus Terrestris Facts
- EMedTV: Tribulus Safety



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