Side Effects of Tribulus Terrestris
Tribulus has been used for quite a long time, and no studies have found any adverse side effects of Tribulus. Again, one of the major benefits of Tribulus is that it’s not a hormone and only helps increase testosterone by increasing the level of Luteinizing Hormones (LH). The only adverse side effect experienced is an upset stomach, which can be helped if taken with food.
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Tribulus terrestris side effects was as a “tonic” to treat sexual dysfunction. In animal husbandry studies tribulus extract was shown to stimulate rutting behavior (i.e. attempting to score) in rams as well as boars. When the supplement Tribestan was given to healthy men (Milanov, 1981) in a dose of 750 milligrams per day for five days, LH and testosterone were elevated 72% and 40% respectively. As you might expect, estradiol was also elevated. In fact estradiol was elevated by 81%! The increase in testosterone is obviously what all the fuss is about, nevertheless, you can’t ignore the fact that whenever you increase testosterone you are going to increase aromatization and therefore estrogen levels.
The active ingredient in tribulus is unknown, but is though to be a component known as furostanol saponins. There has been very little research conducted on the effectiveness of tribulus in elevating testosterone levels – the main claim made by body building products which contain the herb. In some cultures, the tribulus terrestris side effects plant has been used as a “tonic” to in crease energy levels and treat sexual dysfunction (usually in males). In animals, tribulus may stimulate “mounting” behavior. Some European studies suggest that tribulus extract can increase testosterone levels 30-50% above baseline levels – but still well within the normal range. Unfortunately, however, these same studies also suggest a similar increase in estradiol levels – not exactly what the hardcore muscle builders should be interested in boosting.
Tribulus Terrestris is reputed to support increased production of seminal fluid, not only by volume but by sperm count, at the same time supporting increased sexual performance in both men and women. Tribulus Terrestris works synergistically to stimulate male sexual prowess through a non hormonal pathway, by supporting the body’s own hormonal feedback system, and may also assist in improved athletic performance.


