isn't much science done behind this using supplement. Anecdotal reports
suggest that many people use this herb for treating impotence and for
As for using this herb in sport nutrition to
athletic performance and for body building, clinical studies didn't
show much benefit.
as an aphrodisiac and
for treating erectile
dysfunction, many products
contain multiple ingredients such as yohimbe
horny goat weed
(epimedium), maca, ginkgo, L-arginine, ginseng,
damiana, muira puama, DHEA and vitamins and minerals.
By the way, the lack of evidence of effectiveness
does not mean that it does not work. It means that
there are no quality research studies done to prove whether it works or
|Increasing Testosterone Blood Levels|
from animal and human studies are mixed. Some studies show that it
increases blood testosterone levels and others do not.
For example, one of the more recent study
published by Fiziol in 2009 showed that taking 1 capsule 3 times daily
for 20 days resulted in increased blood testosterone levels for the
first 10 days. Afterwards, the levels did not increase any further.
(ED) / Impotence
studies by K. Gauthaman (January 2008) showed that Tribulus terrestris
increases testosterone levels, thus increasing sex drive in primates,
rabbits and rats. The conclusion was that the herb "may be useful in
mild to moderate cases of ED."
However, V.K. Neychev (October 2005)
conducted a study in young men and the results showed that, "Tribulus
terrestris steroid saponins possess neither direct nor indirect
Hence there are conflicting
results. Most studies done in animals clearly show an increase in
testosterone and other sex hormones along with an aphrodisiac benefit
but the studies in human showed no such benefits.
See our list of natural remedies that are used
to treat ED.
/ Low Libido / Increase Sex Drive
studies by K. Gauthaman (January 2008) concluded that Tribulis
terrestris increases testosterone levels, thus increasing sex drive in
primates, rabbits and rats.
As well, P.G. Adaikan (January 2000)
suggested that, "The enhanced relaxant effect observed is probably due
to increase in the release of nitric oxide from the endothelium
and nerve endings, which may account for its claims as an
were unable to locate any clinical research studies to show if Tribulus
terrestris would be useful in increasing libido in humans.
For other natural remedies that are used to increase sex
|Increase Sperm Production|
given this herb producted more sperms. The testosterone level was not
affected. Experts believe that this herb was able stimulate sperm
production through another mechanism other than by increasing
Pectoris (Chest Pain)
terrestris seems to enhance blood flow to the coronary arteries and
this will help patients suffering from angina as reported by B. Wang
/ Diabetes Prevention
Amin et al. (November 2006) showed that Tribulus terrestris had an
protective effect on rats with diabetes. Several other researchers
independently demonstrated that Tribulus terrestris significantly
lowered blood glucose in rats.
done in a lab setting on breast cancer cell tissues showed that T.
terrestris causes the cells to shrink and the nucleus to contract.
| Enhancing Athletic Performance
- Most likely not
research studies in human shows that Tribulus terrestris does not
enhance athletic performance. The best designed study by S. Rogerson et
al. (May 2007) concluded that, "T. terrestris did not produce the large
gains in strength or lean muscle mass that many manufacturers claim can
be experienced within 5-28 days." and, "... it is also reassuring that
taking T. terrestris does not put an athlete at risk of testing
positive based on the World Anti-Doping Agency's [requirements]..."
Other research studies showed the same negative results.
As well G.A.
Brown et al. (September 2000) showed that combining herbal extracts
(such as those that includes Tribulus terrestris) designed to increase
testosterone levels did "not result in increased serum testosterone
concentrations, reduce the estrogenic effect of androstenedione, and
does not augment the adaptations to resistance training."
et al. (October 2005) discovered that, "Testosterone, androstenedione
and luteinizing hormone levels in the serum were measured 24 h before
supplementation (clear probe), and at 24, 72, 240, 408 and 576 h from
the beginning of the supplementation. There was no significant
difference between ... [the] supplemented groups and controls in the
serum testosterone ."
about Tribulus Terrestris
parts of the plant used are the leaf, fruit and root. It is a flowering
plant located in southern Europe, southern Asia, throughout Africa and
in northern Australia.
The component that is suspected to be responsible
for Tribulus terrestris benefits is saponins (a type of steroid
glycosides), specifically protodioscin. It is suggested from animal
studies that it increases testosterone, luteinizing hormone (LH) and
DHEA (dehydroepiandrosterone) levels, leading to an increase in sex
animal studies, this herbal supplement increases testosterone levels
lead to increased sex drive. It is suspected that the herb might
increase sex drive through the synergy of increased testosterone level
and the increased release of nitric oxide (necessary for achieving an
In many studies done in humans, researchers found
that Tribulus terrestris does not increase testosterone levels
sufficiently to explain its benefit as an aphrodisiac. One researcher
suggested that there might be a different mechanism of action that has
not been discovered yet.
The natural supplement does seem to
dilate the blood vessels in the heart to help with angina (chest pain)
and it might therefore also increase the blood flow to the penis to
support a stronger erection. This is speculation until further research
is done. Because of the weakness of the results from good research
studies done on human subjects, we are unable to assign more than a
one-leaf rating on this herb for its use in treating erectile
A. Adimoelja (2000) commented that, "Protodioscin
phytochemical agent derived from Tribulus terrestris L plant, which has
been clinically proven to improve sexual desire and enhance erection
via the conversion of protodioscine to DHEA..."
Benefits and Traditional Uses
/ low libido / increase sex drive
- appetite stimulant
- chest pain
- chronic fatigue syndrome
- colic pain
- coughs and sore throat
- digestive aid
- diuretic (to promote water loss)
- eczema (atopic dermatitis)
- enhancing athletic performance
dysfunction / impotence
blood pressure (hypertension)
- increase muscle mass
- inflammation (generalized)
- rheumatoid arthritis
- urinary problems / painful urination
Effects, Toxicity and Warnings
are few reported side effects from using this herb. The herb might
lower blood pressure and blood sugar levels. It can also increase the
skin's sensitivity to sun exposure.
Safety - There are no reported
health risks from using Tribulus terrestris. In appropriate doses,
Tribulus terrestris is probably safe to use.
Pregnancy & Lactation -
One research study in animals indicates that Tribulis terrestris might
affect the developing fetus. Avoid using. There is no information on
the safety of using
Tribulus terrestris when breastfeeding. Avoid using.
Drug & Health Condition Interactions
Diabetic Medication / Diabetes
research studies showed that the herb lowers blood sugar level in rats.
Monitor your glucose levels when starting or stopping this herb.
Prostate Cancer - theoretical
might, in theory, worsen individuals with existing prostate
Benign Prostatic Hypertrophy (BPH)
herb might, in theory, cause prostate enlargement. One research showed
that it increased the weight of the prostate gland in
& How to Take It
Doses of 250 mg daily have been used in
research studies for enhancement in athletic performance.
is no information on optimum dosage for the herb so start with a low
dosage and increase gradually.
standardized extract to ensure you get what you pay for. It should be
standardized to the active ingredient saponins when possible. (Typical
standardized extract contains between 20% to 40% saponins such as
Treat Erectile Dysfunction without using drugs. Go natural!
How to boost sex drive using natural remedies
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