Can Tribulus Terrestris Cure Erectile Dysfunction And Improve libido?

Tribulus Terrestris can help you overcome erectile dysfunction. But not only that..  

It can also increase your libido. And take sex to an entirely new level. 🙂

How? 

Research studies have demonstrated that Tribulus Terrestris can do this by:

Let’s learn more about this plant. 👍

Tribulus Terrestris Flower And Plant

Tribulus Terrestris

Tribulus Terrestris is a plant of the family Zygophyllaceae, and has been used for medicinal purposes in China, India, Pakistan, the Middle East and parts of Africa, for thousands of years.

It’s a hardy plant that is native to warm, temperate and tropical regions of Europe, Southern Asia, Africa and Australia. 

Due to its rapid growth however, it has spread around the world and become an unwelcome weed and invasive plant in many areas. 

It’s a plant traditionally used as a physical rejuvenation tonic, for supporting the immune system, treating liver and kidney conditions, cough problems, skin conditions, headaches, vertigo, respiratory disorders, inflammation, infertility, and as an aphrodisiac. 

Today, it is mostly used for infertility, sexual health and as an athletic performance enhancer.

Tribulus can improve athletic performance

Tribulus Terrestris is an annual plant, meaning that it completes its life cycle from germination to seed in one year, and then dies. 

Its stems and branches are normally 20-60 cm long, with even and opposite green and hairy leaves forming leaflets of up to 10 cm. 

It generally grows low to the ground, where it forms dense mats 2 to 5 feet in diameter. 

Tribulus Terrestris has small yellow flowers and produces a fruit covered with sharp spines. 

Because of its rapid growth and its spikes, it has received many names such as Devils Thorn, Devils Weed and Puncture Vine. 

The parts of the plant that are normally used for medicinal purposes, are the fruits and the root.

The fruits and the root of Tribulus are used for medicinal purposes

There are more than 20 species in the Tribulus family, but Tribulus Terrestris is the most frequently utilized plant for supplements.

Let’s learn how this plant can impact your sex life. 😊

How Does Tribulus Terrestris Improve Erectile Dysfunction And Libido?

Tribulus Terrestris is rich in components that are believed to have aphrodisiac effects. These components are: saponins, flavonoids, glycosides, phytosterols, tannins, terpenoids, alkaloids, quinic acid derivatives, amides and lignanamides.

By the way, the saponins are believed to protect the plant against microbes and fungi. 

And protodioscin, one of the most important compounds of Tribulus Terrestris, is a steroidal saponin.

How Does Tribulus Terrestris Improve Erectile Dysfunction And Libido?

These components in turn, are able to impact ED and sex drive by:

  • Increasing testosterone production
  • Increasing nitric oxide production
  • Being a potent antioxidant

Let’s address these one by one.

Tribulus Terrestris Can Increase Testosterone Production

Research studies (see below) have shown that this plant can improve testosterone levels in both humans and animals.

First off, why is testosterone so important?

Testosterone Is Important For Sexual Functions

Testosterone is your primary male sex hormone. It’s job is to govern and support anything sexual that goes on in your body.

You therefore need testosterone in order to have a sex drive, and to function sexually.

Therefore, should your testosterone be low, you are likely to have little interest in sex. And you are also more likely to struggle with erectile dysfunction. 

It has been suggested that Tribulus Terrestris increases testosterone, by increasing the production of something called luteinizing hormone.

This hormone in turn instructs cells in your testicles, called Leydig cells, to produce testosterone.

Therefore, when there is more luteinizing hormone requesting production of testosterone, you will normally produce more testosterone.

Leydig cells in the testicles produce testosterone

Research has also indicated that Tribulus can increase the number of Leydig cells in your testicles. 

When you have more ‘factories’ (Leydig cells) producing testosterone, you are also likely to produce more of it. 

A third pathway that has been proposed is that protodioscin may be a precursor to dehydroepiandrosterone (DHEA). This DHEA in turn, is a precursor to testosterone.

Therefore, the more DHEA you have, the more testosterone you will normally also produce.

Tribulus Terrestris Can Increase Nitric Oxide Production

Tribulus Terrestris has also in research studies (see below) shown an ability to increase nitric oxide production. 

Tribulus Terrestris Can Increase Nitric Oxide Production

And why do you need nitric oxide?

You need nitric oxide in order to get erections

Your penis is flaccid because muscles inside your blood vessels (called smooth muscles), squeeze the blood vessels in your penis flat. 

When these blood vessels are flat, almost no blood will remain. In other words, almost all the blood is forced out of the penis.

In order to get an erection, blood needs to flow into your penis to fill it up.

This is where nitric oxide comes to the rescue: It instructs the smooth muscles in your penis to relax and let go of the squeeze. And as they relax, the blood vessels are no longer squeezed flat, but will fill with blood.

Nitric oxide makes blood vessels open up

As blood flows into the blood vessels of your penis, an erection will form. And when your penis is completely filled with blood, you will have a firm erection. 

So how does this plant make you produce more nitric oxide?

It is believed that protodioscin (one of the components of Tribulus Terrestris), can make the enzyme nitric oxide synthase more efficient at producing nitric oxide. 

So if this enzyme can make more nitric oxide than normal, you will have more nitric oxide available. This should normally make it easier for you to both get and maintain erections.

Tribulus Terrestris Is A Potent Antioxidant

Research studies (see below) have also shown that this plant can be a potent antioxidant.

How antioxidants work against free radicals

Why are antioxidants helpful for performing sexually?

In your body, you will at any given time have what’s called free radicals. These are ‘unstable’ molecules, because they have an unpaired electron orbiting its nucleus.

They are almost ‘desperate’ to react with something or somebody.  

And this can cause all kinds of damage. It can even cause damage to your DNA.

In addition, free radicals love to react with nitric oxide. So if you have lots of free radicals in your blood, your nitric oxide levels are likely to be reduced.

And with less nitric oxide, you will normally find it more difficult to get erections.

Let’s look at the scientific research on Tribulus Terrestris.

Scientific research on Tribulus Terrestris

Scientific Studies On Tribulus Terrestris’ Impact On Libido And ED

In this section, you will find all the relevant scientific evidence that exists about Tribulus Terrestris and its impact on sexual functions. 

Or at least, all the relevant scientific evidence that I am aware of. 😊

With this information at hand, you can better draw your own conclusions. 

You will find a summary of the key findings from these scientific studies. And you will find a link to the studies, should you want to read the actual studies yourself.

I have presented all relevant studies I am aware of, whether they indicated that the effect from Tribulus Terrestris was positive or negative. 

Let’s look at what the scientists say.

Scientific Studies On Tribulus Terrestris’ Impact On Libido And Erectile Dysfunction

Tribulus Terrestris Study 1: May 2020

A Comprehensive Review of the Phytochemical, Pharmacological, and Toxicological Properties of Tribulus Terrestris L.

This study did an analysis and summary of research studies performed on Tribulus Terrestris from 1982 to 2020. Only research that met certain criteria were included in the analysis.

The outcome?

  • Protodioscin is the dominant component in Tribulus Terrestris fruits, and is considered to be the main pharmacologically active steroidal saponin
  • Tribulus Terrestris can increase testosterone levels
  • Tribulus Terrestris is a potent antioxidant
  • The plant can treat both erectile dysfunction and low libido
Summary of research studies performed on Tribulus Terrestris

Tribulus Terrestris Study 2: December 2019

Improvement of fertility parameters with Tribulus Terrestris and Anacyclus Pyrethrum treatment in male rats.

The aim of this study was to determine the effects of Anacyclus Pyrethrum and Tribulus Terrestris extracts, both separately and simultaneously, on male rat fertility parameters.

32 male rats were divided into 4 groups and given the following treatment, daily for 25 days:

  • Group 1: Saline (control)
  • Group 2: Tribulus Terrestris (10mg/kg)
  • Group 3: Anacyclus Pyrethrum (100mg/kg)
  • Group 4: Tribulus Terrestris (10mg/kg), and Anacyclus Pyrethrum (100mg/kg)

The outcome?

  • Sperm count increased in all the treatment groups
  • The Tribulus Terrestris and the combined groups showed significantly increased testosterone level, compared to control group
  • All treatment groups showed increased luteinizing hormone levels
  • All the treatment groups had higher number of Leydig, spermatogonia and spermatid cells

The study concluded that Tribulus Terrestris and Anacyclus Pyrethrum individually, improved sexual parameters. And taken together, they had an even more potent effect.

Tribulus Terrestris effect on fertility in rats

Tribulus Terrestris Study 3: September 2019

Gross saponin of Tribulus Terrestris improves erectile dysfunction in type 2 diabetic rats by repairing the endothelial function of the penile corpus cavernosum.

The purpose of this study was to investigate the effect of gross saponins of Tribulus Terrestris, on erectile function in rats resulting from type 2 diabetes mellitus.

Adult male rats were initially treated to provoke type 2 diabetes mellitus. Rats were then divided into 4 groups of 6 rats:

  • Group 1: No treatment
  • Group 2: Treated with Tribulus Terrestris
  • Group 3: Treated with Sildenafil (Viagra)
  • Group 4: Treated with Tribulus Terrestris and Sildenafil

There was also a 5th group that was a non-diabetic control group.

The outcome?

In rats treated with Tribulus Terrestris:

  • The intracavernous pressure was significantly higher than in the group receiving no treatment
  • There was significantly increased nitric oxide levels, compared to that in the no treatment group
  • Expression of eNOS was significantly higher than that in the no treatment group

Regarding cGMP levels, this was higher in the Tribulus Terrestris and the Sildenafil groups, than in the control group. This level was also higher in the mixed group than in any single-treatment group.

Tribulus Terrestris improves erectile function in rats

Tribulus Terrestris Study 4: August 2019

Chemical Constituents, Biological Properties, and Uses of Tribulus Terrestris: A Review.

The aim of this review was to assess the scientific publications involving Tribulus Terrestris, with special reference to its chemical constituents and biological properties.

The outcome?

  • Protodioscin is a predecessor of dehydroepiandrosterone (DHEA) in patients with low hormone levels
  • Tribulus Terrestris can increase serum levels of free and bioavailable testosterone
  • Tribulus Terrestris has antioxidant properties
  • Tribulus Terrestris improves endothelial function and nitric oxide production
Tribulus Terrestris increase DHEA

Tribulus Terrestris Study 5: May 2019

Tribulus Terrestris versus placebo in the treatment of erectile dysfunction and lower urinary tract symptoms in patients with late-onset hypogonadism: A placebo-controlled study.

The aim of this study was to  evaluate the efficacy and safety profiles of Tribulus Terrestris in aging males with partial androgen deficiency, who also suffered from erectile dysfunction and lower urinary tract symptoms.

70 men with erectile dysfunction and lower urinary tract symptoms, took 750 mg Tribulus Terrestris a day, or a placebo, for 3 months.

The outcome?

After 3 months, total testosterone increased by 23% and erectile function increased by 50%, in the group taking Tribulus Terrestris.

There was no change in the lower urinary tract symptoms.

The study concluded that Tribulus Terrestris can elevate testosterone level and improve sexual function, in patients who suffer from erectile dysfunction and partial androgen deficiency.

Tribulus Terrestris erectile dysfunction and hypogonadism

Tribulus Terrestris Study 6: May 2017

Evaluation of the efficacy and safety of Tribulus Terrestris in male sexual dysfunction-A prospective, randomized, double-blind, placebo-controlled clinical trial.

The objective of this study was to compare the efficacy of Tribulus Terrestris, in comparison with placebo, for the treatment of erectile dysfunction, in men with or without hypoactive sexual desire disorder.

The Tribulus Terrestris supplement that was used was a brand called Tribestan.

180 males, aged between 18 and 65 years, with mild or moderate ED and with or without hypoactive sexual desire disorder, participated. They were given either 1,500 mg Tribulus Terrestris, or a placebo, daily for 12 weeks.

The outcome?

The research reported that the International Index of Erectile Function score improved significantly for the men receiving Tribulus Terrestris.

Improvements were also found for intercourse satisfaction, orgasmic function, sexual desire and overall satisfaction.

The study found no significant difference between the groups for levels of testosterone or free testosterone.

Study: Tribulus terrestris on male sexual dysfunction

Tribulus Terrestris Study 7: February 2016

Pro-sexual and androgen enhancing effects of Tribulus Terrestris L.: Fact or Fiction.

The aim of this study was to analyze the evidence supporting a role for Tribulus Terrestris as an aphrodisiac, and to reappraise the widely believed view of Tribulus Terrestris as an androgen enhancing botanical supplement.

In this report, the researchers did an extensive review of research on Tribulus Terrestris that had been published between 1968 and 2015.

The outcome?

  • Tribulus Terrestris can treat erectile dysfunction and sexual desire problems
  • The hypothesis that these effects are due to androgen enhancing properties, are inconclusive
  • There is emerging evidence for possible endothelium and nitric oxide-dependent mechanisms, underlying Tribulus Terrestris’ aphrodisiac and pro-erectile activities
Androgen enhancing effects of Tribulus Terrestris

Tribulus Terrestris Study 8: April 2015

Pilot Study on the Effect of Botanical Medicine (Tribulus Terrestris) on Serum Testosterone Level and Erectile Function in Aging Males With Partial Androgen Deficiency (PADAM).

The purpose of this study was to analyze the effect of Tribulus Terrestris on testosterone level and erectile function in aging males, with partial androgen deficiency.

30 men with partial androgen deficiency, were given 750 mg Tribulus Terrestris a day, or a placebo, for 3 months. 

The outcome?

Results showed a statistically significant difference in the level of testosterone (total and free) and erectile function, in the Tribulus Terrestris group.

Effect of Tribulus Terrestris on testosterone

Tribulus Terrestris Study 9: August 2014

Evaluation of 5α‐reductase inhibitory activity of certain herbs useful as antiandrogens.

The aim of this study was to evaluate the 5α-reductase inhibitory activity of Tribulus Terrestris, and other plants.

5α-reductase is an enzyme that converts testosterone to its 5α-reduced form dihydrotestosterone. So if something can inhibit this enzyme, more testosterone should survive.

The outcome?

The study concluded that Tribulus Terrestris did not have strong 5α-reductase inhibitory abilities. Therefore, it’s likely that its testosterone increasing properties come via other pathways than 5α-reductase inhibition.

5α-reductase inhibitory activity of Tribulus Terrestris

Tribulus Terrestris Study 10: April 2013

Effect of Tribulus Terrestris saponins on behavior and neuroendocrine in chronic mild stress depression rats.

The purpose of this study was to analyze the effect of Tribulus Terrestris on behavior and neuroendocrine metrics, in chronic mildly stressed and depressed rats. 

30 male rats were given various doses of Tribulus Terrestris, or a placebo, for 4 weeks.

The rats were then exposed to an unpredicted sequence of mild stressors.

The outcome?

In the rats, this stress decreased the scores of crossing, rears and grooming, and increased cortisol levels. 

The medium and high Tribulus Terrestris dose (0.75 and 2.25 g/kg), significantly prevented all of the abnormalities induced by the stress. 

And the highest dose of Tribulus Terrestris reduced cortisol levels by 60%.

The study concluded that Tribulus Terrestris has the ability to reduce chronic mild stress, and to produce antidepressive effects.

Effect of Tribulus Terrestris on stressed rats

Tribulus Terrestris Study 11: March 2013

Effects and Mechanism of Action of a Tribulus Terrestris Extract on Penile Erection.

The goal of this study was to investigate the effect of Tribulus Terrestris on the relaxation of the corpus cavernosum of rabbits and rats.

Groups of rabbits and rats were given various doses of Tribulus Terrestris, or a placebo, daily for one month.

The outcome?

Tribulus Terrestris produced a dose-dependent relaxation in the smooth muscles in the corpus cavernosum. 

The researchers concluded that the results involved the nitric oxide / nitric oxide synthase pathway and endothelium of the corpus cavernosum.

Effect of Tribulus Terrestris on rabbits

Tribulus Terrestris Study 12: October 2012

In vivo and in vitro animal investigation of the effect of a mixture of herbal extracts from Tribulus Terrestris and Cornus Officinalis on penile erection.

The aim of this study was to examine the effects of Tribulus Terrestris and Cornus Officinalis extracts on relaxation of the smooth muscle of the corpus cavernosum, their mechanisms of action, and on penile erection.

Groups of rabbits were given either Tribulus Terrestris, Cornus Officinalis, the two supplements together, or nothing at all, for one month.

The outcome?

The research demonstrated that Tribulus Terrestris alone, Cornus Officinalis alone, and the mixture of both extracts, showed concentration-dependent relaxation effects of the corpus cavernosum.

Tribulus Terrestris and penile erection

Tribulus Terrestris Study 13: July 2012

Clinical study of Tribulus Terrestris Linn. in Oligozoospermia: A double blind study.

The purpose of this study was to study the effect of Tribulus Terrestris in the management of Oligozoospermia (low sperm count).

63 men between the ages of 21 and 50 years, received 6 grams of Tribulus Terrestris twice daily, or a placebo, for 60 days.

The outcome?

The group receiving Tribulus Terrestris experienced a 16% increase in testosterone.

Both the placebo and Tribulus Terrestris groups saw a significant increase in total sperm count. However, only the Tribulus Terrestris group saw improvements in sperm motility and other sperm measurements.

The Tribulus Terrestris group also saw improvements in the loss of erection by 6%, rigidity 9%, premature ejaculation 6%, and lack of orgasm 10% scores.

Tribulus Terrestris improves low sperm count

Tribulus Terrestris Study 14: January 2012

Evaluation of the aphrodisiac activity of Tribulus Terrestris Linn. in sexually sluggish male albino rats.

The objective of this research was to study the effect of acute and repeated doses of Tribulus Terrestris, on sexual function in sexually sluggish male albino rats.

18 sexually sluggish male rats were given 50 mg/kg, 100 mg/kg of Tribulus Terrestris, or a placebo, daily for 28 days. 

The outcome?

The study reported a 30% and 55% increase in testosterone levels with 50 mg/kg and 100 mg/kg Tribulus Terrestris extract, respectively. 

Sperm count also increased significantly in the rats receiving Tribulus Terrestris.

The study also reported an increase in mount frequency, intromission frequency, and penile erection index, as well as a decrease in the time the rats needed between each session.

The study concluded that Tribulus Terrestris is a sexual enhancer in the management of sexual dysfunction in males.

Aphrodisiac activity of Tribulus Terrestris

Tribulus Terrestris Study 15: April 2011

Aphrodisiac activity of Tribulus Terrestris Linn. in experimental models in rats.

The goal of this study was to study the effect of Tribulus Terrestris on sexual behavior in male albino rats, and compare this with Sildenafil Citrate (Viagra).

Groups or rats were given 100 mg/kg Tribulus Terrestris extract, or 0.71 mg/kg of Sildenafil Citrate (Viagra), daily. 

The outcome?

Tribulus Terrestris extract improved sexual behavior of male rats, measured by increased intromission frequency and firmer erections. 

The rats also experienced an increase in testosterone levels, and in sperm count. 

The results with Tribulus Terrestris were noted to be comparable to the results of Sildenafil Citrate.

Woman in laboratory

Tribulus Terrestris Study 16: January 2010

Effects of Tribulus Terrestris on endocrine sensitive organs in male and female Wistar rats.

The goal of this study was to investigate the possible effects of Tribulus Terrestris on endocrine sensitive organs in intact and castrated male rats, as well as in post-menopausal rats.

Three groups of castrated male rats were given 11, 42 and 110 mg/kg/day of Tribulus Terrestris, for 7 days.

The same dose was given to intact males and castrated females, for 28 days 

The outcome?

Tribulus Terrestris was not able to stimulate the prostate, seminal vesicle, uterus and vagina in the rats. This indicates a lack of androgenic and estrogenic activity of Tribulus Terrestris.

However, the study reported an increase in sperm production in the rats given 11 mg/kg/day of Tribulus Terrestris.

Scientists in laboratory

Tribulus Terrestris Study 17: January 2008

The hormonal effects of Tribulus Terrestris and its role in the management of male erectile dysfunction–an evaluation using primates, rabbit and rat.

The aim of this study was to evaluate the hormonal effects of Tribulus Terrestris in primates, rabbits and rats, and to identify its usefulness in the management of erectile dysfunction.

Groups of primates, rabbits and rats were injected with different doses of Tribulus Terrestris extract, for 8 weeks.

In addition, castrated rats were treated with testosterone.

The outcome?

Primates injected with 7.5 mg/kg Tribulus Terrestris saw a 52% increase in testosterone levels, a 31% increase in dihydrotestosterone levels, and a 29% increase in dehydroepiandrosterone sulphate levels.

In rabbits administered with Tribulus Terrestris, both testosterone and dihydrotestosterone levels were increased compared to control. However, only the increases in dihydrotestosterone levels (by 30% and 32% at 5 and 10 mg/kg) were statistically significant.

In castrated rats given Tribulus Terrestris, testosterone levels increased by 25%.

In castrated rats given Testosterone extract, testosterone levels increased by 51%.

The study concluded that Tribulus Terrestris may be useful in mild to moderate cases of erectile dysfunction, and that it may be protodioscin that is responsible for the effects.

Hormonal effects of Tribulus Terrestris

Tribulus Terrestris Study 18: July 2007

Free serum testosterone level in male rats treated with Tribulus Alatus extracts.

The objective with this study was to investigate the effect of Tribulus Alatus extracts on free serum testosterone in male rats.

30 rats were divided into 5 groups receiving 50 mg/kg of extracts from different parts of the plant, or a placebo, daily for 40 days.

The outcome?

All tested extracts showed significant increase (up to 400%) in the level of free serum testosterone, compared to control group. Also, the extracts of the fruit were the most potent.

The study concluded that Tribulus Terrestris appears to possess aphrodisiac activity due to its androgen increasing property.

Effect of Tribulus Alatus extracts on free serum testosterone

Tribulus Terrestris Study 19: May 2007

The effect of five weeks of Tribulus Terrestris supplementation on muscle strength and body composition during preseason training in elite rugby league players.

The purpose of this study was to determine the effect of Tribulus Terrestris on strength, fat free mass, and the urinary testosterone/epitestosterone ratio, during 5 weeks of preseason training in elite rugby players.

The study included 22 men who were given 450 mg Tribulus Terrestris, or a placebo, daily for 28 days. 

The outcome?

The research concluded that 450 mg/kg of Tribulus Terrestris provided no increase in testosterone levels, muscular strength or body composition, compared to the control group.

Tribulus Terrestris supplementation muscle strength

Tribulus Terrestris Study 20: October 2005

The aphrodisiac herb Tribulus Terrestris does not influence the androgen production in young men.

The aim of this study was to investigate the influence of Tribulus Terrestris extract on androgen metabolism in young males.

This study included 21 men, aged 20-36 years old. They were given 10 or 20 mg/kg body weight Tribulus extract, or a placebo, daily for 4 weeks. 

The outcome?

The study found no influence on total testosterone or luteinizing hormone levels from these doses of Tribulus Terrestris.

Does Tribulus Terrestris influence androgen production

Tribulus Terrestris Study 21: January 2005

Effect of Tribulus Terrestris on nicotinamide adenine dinucleotide phosphate-diaphorase activity and androgen receptors in rat brain.

The purpose of this study was to evaluate the effect of Tribulus Terrestris on nicotinamide adenine dinucleotide phosphate-diaphorase activity, and androgen receptor immunoreactivity, in the rat brain. 

24 adult male rats were divided into 2 groups of 12 each. Group 1 was given distilled water. Group 2 was given 5mg/kg of body weight of Tribulus Terrestris, once daily for 8 weeks.

The outcome?

After 8 weeks, there was a 58% increase in androgen receptor activity in the rat brains of the rats in Group 2. 

The research also reported a 67% increase in neurons expressing nicotinamide adenine dinucleotide phosphate-diaphorase. This suggests that Tribulus Terrestris can increase nitric oxide synthase and subsequent nitric oxide production.

The study concluded that the observed increase in androgen receptor activity and nicotinamide adenine dinucleotide phosphate-diaphorase positive neurons, was probably due to the androgen increasing property of Tribulus Terrestris. 

It also concluded that the findings from the present study add further support to the aphrodisiac claims of Tribulus Terrestris.

Scientific study done in laboratory

Tribulus Terrestris Study 22: July 2004

Sexual Effects of Puncturevine (Tribulus Terrestris) Extract (Protodioscin): An Evaluation Using a Rat Model.

The objective of this study was to validate the claim of Tribulus Terrestris as an aphrodisiac.

40 sexually mature male rats were randomly divided into four groups of 10 each. Group I served as a control group. Groups II, III, and IV were given three different doses of Tribulus Terrestris extract (2.5, 5 and 10 mg/kg body weight, respectively), daily for 8 weeks. 

The outcome?

  • Increase in body weight: 9%, 23%, and 18% for groups II, III & IV
  • Increase in intracavernous pressure: 43% and 26% for groups III and IV
  • Increase in mount frequency: 27% and 24% for groups III and IV
  • Increase in intromission frequency: 19% and 22% for groups III and IV
  • Decrease in mount latency: 16%, 23%, and 22% for groups II, III, and IV
  • Decrease in postejaculatory interval: 20% for group III

The researchers concluded that the weight gain and improvement in sexual behavior was likely the result of Tribulus Terrestris’ androgen increasing property. 

And that the increase in intracavernous pressure was the result of an increase in androgen, and subsequent release of nitric oxide.

Is Tribulus Terrestris an aphrodisiac?

Tribulus Terrestris Study 23: August 2002

Aphrodisiac properties of Tribulus Terrestris extract (Protodioscin) in normal and castrated rats.

The aim of this study was to investigate sexual behaviour and intracavernous pressure in both normal and castrated rats, after administration of Tribulus Terrestris.

40 rats were divided into five groups of 8 and given the following treatment: 

  • Group 1: Distilled water treated (normal and castrated)
  • Group 2, 3 and 4: Testosterone (normal and castrated, 10 mg/kg body weight, subcutaneously, bi-weekly) 
  • Group 5: Tribulus Terrestris (castrated, 5 mg/kg body weight, orally once daily). 

The outcome?

The research found that the rats treated with either Tribulus Terrestris or testosterone, increased prostate weight and intracavernous pressure. 

These rats also experienced a mild to moderate increase in mount and intromission frequencies, and decrease in mount and intromission latencies and post-ejaculatory intervals. 

The study concluded that Tribulus Terrestris appears to possess aphrodisiac activity, probably due to androgen increasing properties.

Aphrodisiac properties of Tribulus Terrestris extract

Tribulus Terrestris Study 24: June 2000

The effects of Tribulus Terrestris on body composition and exercise performance in resistance-trained males.

The aim of this study was to determine the effects of Tribulus Terrestris on body composition and exercise performance, in resistance-trained males.

15 men were given 3.21 mg/kg body weight of Tribulus Terrestris, or a placebo, daily for 8 weeks. During these 8 weeks, the men went through a specific exercise regime.

The outcome?

There were no statistically relevant changes in body weight, percentage fat, total body water, dietary intake, mood states or muscle endurance, in the Tribulus Terrestris group. 

Note that the Tribulus Terrestris dose was low compared to many other studies.

Lab equipment filled with liquids

Tribulus Terrestris Study 25: January 2000

Proerectile pharmacological effects of Tribulus Terrestris extract on the rabbit corpus cavernosum.

The objective of this study was to investigate the effect of Tribulus Terrestris extract on the isolated corpus cavernosal tissue of rabbits, and to determine the mechanism by which protodioscin exerts its effects.

24 rabbits were given either 0, 2.5, 5 or 10 mg/kg body weight of Tribulus Terrestris, daily for 8 weeks.

The outcome?

The rat corpus cavernosum experienced an increase in relaxation of up to 24% from Tribulus Terrestris. The increase was concentration dependent.

The study concluded that protodioscin has a pro-erectile effect, and that this is probably due to an increase in the production of nitric oxide.

Proerectile effects of Tribulus Terrestris

Other Tribulus Terrestris Health Benefits

Tribulus Terrestris has in several of the studies above, demonstrated an ability to increase sperm count and sperm motility, in both rats and humans.

Studies have also shown a substantial increase in pregnancies with Tribulus Terrestris supplementation. Which indicates that it can increase fertility. 

It has also been shown in one research study to help neutralize something called antisperm antibodies in women. 

These antisperm antibodies kill sperm so that a pregnancy is more difficult to achieve. The study showed that when Tribulus Terrestris neutralizes these antisperm antibodies, the chance of conception increases significantly.

Tribulus can increase sperm count and sperm motility

Tribulus Terrestris is also claimed to be an adaptogen. This means that it works to normalize or restore body functions that are out of balance.

An adaptogen targets systems and functions within the body that are working sub-optimally, and it restores these systems and functions to perform optimally (or improves them). 

It does this without causing harm to any parts of the body.

Also, adaptogens have no or little effect beyond restoring these functions. Meaning that the effects will stop once the systems are normalized.

Tribulus Terrestris is also being used for general health, rejuvenation and energy. 

It is also taken as natural medicine for the liver, kidneys, urinary tract, immune system, cardiovascular conditions, high blood pressure and poor circulation. 

Natural medicine

Tribulus has also been used for treating painful urination, gout, and has shown anticancer, antibacterial, and anti-inflammatory properties. 

It also appears to have antidepressant and anti-diabetic effects. It has also been used as a mood enhancer, for headaches, dizziness and premature ejaculation.

In addition, Tribulus Terrestris is used by many athletes, and particularly athletes of high intensity sports such as weight-lifting, sprinting and American football. 

Many of these athletes have claimed that Tribulus Terrestris gives a boost to performance, however, scientific studies are generally not backing up these claims.

Let me tell you about my experience with Tribulus Terrestris supplements.

Can Tribulus boost athletic performance?

My Experience With Tribulus Terrestris Supplements

  • Form: At least 40% saponins extract in powder form
  • Dose: One tablespoon (not fully topped) (approximately 7 grams)
  • When: 60-120 minutes before sex
  • Effect on libido: Good
  • Effect on erections: Very good
  • Effect on sensation: Very good
  • Taste: Absolutely disgusting
  • Verdict: One of my favorite supplements 👍
  • Noticed side-effects: None

I struggled with ED and libido problems for more than 10 years. During these 10 years, I tried a lot of supplements. I tried almost anything I could find. Supplements in capsules, tablets, tinctures, powders, teas, etc.

Different kinds of supplements in bowls

But they didn’t work for me. It was extremely frustrating.

But one day it finally did. 😊 And it was with Tribulus that I had this epiphany. Here is my story.

During my early experimentation with supplements, I was not able to get any effect whatsoever from any of the supplements. Nothing!

Then I bought a bottle of Tribulus capsules. The reviews were red hot and I was eager to try.

I took two capsules (as the instructions on the bottle said), about an hour before sex. This time I did feel something. There was a slight effect. Tiny, but there was something. 😊

The sensations from sex were somewhat more intense. It wasn’t a huge difference, but I could feel that it was a tiny bit stronger.

Herbal capsules on table

The supplement may have also made it a tiny bit easier to get an erection.

I tried these capsules several times with mixed results. The small change in sensation would sometimes be there, and sometimes not. 

So it wasn’t consistent. And in any case, the effect was so tiny, it wasn’t able to solve my ED and libido problems in the first place.

I therefore found the supplement of little use. So I stopped using it.

A few years later, I wanted to give Tribulus Terrestris another go. At this time, I had become more systematic with trying to find a solution to my ED and libido problems, and I wanted to retry the things that in the past had given me some form of positive feedback. 

I suspected that the Tribulus supplement I had used in the past was not super potent.

Tribulus Terrestris powder

I therefore purchased a high quality Tribulus Terrestris powder. It contained 90% saponins, and it was sold from what seemed like a reputable seller. 

It had a certificate stating that the product did contain the saponin content it claimed, as well as containing levels of heavy metals that were below set limits.

The package had arrived in the mail, and it sat on my kitchen counter. 

At this point, I had tried almost every supplement there was, and my success rate was zero. I was debating whether it was even worth the effort to try this one. I was not keen on another disappointing experience.

Part of me just felt like giving up. It felt like all these supplements were just a scam.

But another part of me wanted to give it a shot. But I thought that taking the recommended dose, which was 200 mg, was probably not going to do anything for me. 

Package in the mail

So I decided to go a little crazy.

Instead of 200 mg, I decided to take a whole tablespoon! 

I think it must have been close to 10 grams.

Or about 50 times the recommended dose.

So about one hour before sex, I mixed one tablespoon of the powder with cold water. I stirred with a fork until the powder was dissolved, and then drank it. 

Yuck..!! What a horrible taste! To me, it was super bitter and unpleasant – not comparable to anything else I could think of at the time. It almost made me vomit.. 😠

By the way, when I take Tribulus Terrestris today, I put the powder in capsules. When I swallow the capsules, there is no taste.

Tribulus powder mixed with cold water

If you want to purchase a capsule making set and capsules, you find them here.

Back to the story..

About an hour later, I sat down on the sofa with my girlfriend. 

As soon as we started kissing and touching each other, I got an erection. This was not normal! Normally, it would take a lot more for me to get an erection.

And the erection was super hard. It was not semi-hard or somewhat engorged, but it was rock solid!

We then moved to the bedroom and started having sex.

From the kissing to the bedroom and througout the sex, my erection was super firm! It didn’t go half soft during sex, nor loose any of its firmness.

Tribulus made sex incredible

Wow – this was new! This was amazing! 😃

But perhaps even more impressive: The pleasurable sensations from sex were even more intense than normal! This supplement made sex feel even better. It was more intense, more sensitive and simply more pleasurable.

What an epiphany! What had I just discovered? I could hardly believe my luck!

I have now lowered the dose to 7 grams, and I still get the same outcome. It’s consistent, reliable and it has become one of my go-to supplements.

In addition to the effects described above (stronger erections and more intense sensations), it also increases my libido.

This effect is not very strong, but about 40 minutes or so after taking this supplement, I normally feel a little more sexually charged. I think about sex and want sex more.

Tribulus incrases my libido

Although Tribulus Terrestris is great on its own, the effects are even more intense when I combine it with other supplements.

And when I take supplements now, I normally always take a combination of four different ones.

This is the combination I take when taking Tribulus Terrestris: 

When I take other combinations, I keep the top three supplements (L-citrulline, Pine Bark and ZMA), and swap Tribulus Terrestris for one of these: Fenugreek, Horny Goat Weed, Maca, or Tongkat Ali.

Tribulus Terrestris flower and leaves

And when I take supplements in these combinations, the effects are normally very intense and also very reliable. 

My erections are super solid! The erection effect is on par with what I got in the past when I took pharmaceutical drugs, such as Viagra. Meaning, my erections are almost as strong with these supplements as with pharmaceutical drugs.

But in addition to getting very hard erections from these combinations, I also get the effects on libido and sensations. I never got any of these effects from pharmaceutical drugs.

If you want to purchase a high quality version of Tribulus Terrestris, you find it here

By the way, even though Tribulus Terrestris can be of amazing help to function sexually, taking a pill or a supplement is not the ideal long-term solution.

The ideal long-term solution should be to overcome erectile dysfunction naturally and permanently. You can learn more in this guide.

Guide compass

Safety Of Tribulus Terrestris

Is it safe to take Tribulus Terrestris in the doses that I have taken? Which is about 7 grams.

The answer is that I don’t know. 

I am not a doctor and I don’t know for sure whether this is indeed safe.

Personally, I have never experienced any side effects from taking Tribulus Terrestris in these doses. 

I have taken these supplements on multiple occasions over several years, and not a single time have I experienced negative side effects.

However, that does not mean that it is 100% safe. There is also a chance that your body may react differently than my body. 

Should you want to try the same dose of Tribulus Terrestris as I have, you do this 100% at your own risk.

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