Top 10 Erectile Dysfunction Supplements with Proof

March 4, 2015 by in category sexual health with 0 and 0
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Erectile dysfunction is a condition when a man can no longer get or keep erection form enough for intercourse. If this occurs sometimes, infrequently, it is not a cause for concern. However, if it is an ongoing problem, it may cause stress, lowered self-confidence and may lead to problems in the relationship.

erectile dysfunction

The symptoms of erectile dysfunction include:

  • Trouble in getting an erection of the penis
  • Trouble in keeping the erection
  • Reduced sexual desire

It is advisable to a doctor if a man is suffering from persistent erectile dysfunction which is disrupting a healthy sex life and is affecting you and your partner. Men who have diabetes, heart disease or other health issues should also see their family doctor. Treatment for erectile dysfunction often includes treating the underlying cause for it.

This disorder may be due to physical and/or psychological reasons. Some of the common causes of erectile dysfunction are as follows:

Physical causes:

  • Heart Disease
  • High Cholesterol
  • High Blood Pressure
  • Diabetes
  • Obesity
  • Parkinson’s Disease
  • Low Testosterone
  • Tobacco, Alcohol, Drug usage
  • Certain Medicines

Psychological reasons include:

  • Depression, Anxiety
  • Stress
  • Relationship issues due to stress, communication problems

Another important risk factor for erectile dysfunction in men is age. As men get older, erections may take longer to develop and not be as firm. However, age itself is not the direct reason behind this. With age, there is increase in health issues and consumption of medicines which then contribute to erectile dysfunction.

This disorder needs to be addressed and solved at the earliest as failure to do so may lead to increased stress, lowered self-esteem, anxiety unsatisfactory sex life which in turn affects marital or other relationships and additionally may cause inability to get one’s partner pregnant. This is turn could lead to increased stress. This becomes a vicious cycle out of which, it is vital to get out.

There are various supplements available in the market which claim to cure erectile dysfunction speedily and effectively. It is however, necessary to weigh the available options wisely before adopting any of these supplements.

Supplements with proven benefits

Various natural remedies for treating erectile dysfunction have been traditionally in existence since centuries. However, adequate scientific research has not been done on all of them. Some of the commonly available supplements for erectile dysfunction, their merits and demerits have been discussed here.


Maca is believed to help alleviating erectile dysfunction and improving libido in men. It is also known to improve stamina and reduce anxiety when supplemented in a powdered form for around 6-8 weeks.


Maca is commercially available in a powdered form. According to plenty of studies, the suggested dosage is 1500 – 3000 mg per day.

Clinical Proof #1

A research study on 50 men suffering from mild erectile dysfunction was done by Zenico and co-researchers which showed a small but significant effect of maca supplementation in treatment of mild erectile dysfunction among these men.

These 50 men who were a part of the research study were put into 2 treatment groups.

  1. Group 1 was given 2400 mg/day maca extract supplementation
  2. Group 2 was given a Placebo (substance similar to maca extract which did not have properties of maca extract)

The participants were made to complete the International Index of Erectile Function (IIEF-5) and the Satisfaction Profile (SAT-P) before starting treatment as well as 12 weeks after treatment. This was done to see the improvement (if any) in IIEF-5 and SAT-P as a result of the maca extract supplementation.

The researchers observed that there was increase in both scores (IIEF-5 and SAT-P) in both treatment groups after 12 weeks of treatment. However, this increase was much higher in Group 1 which was given 2400 mg/day maca extract supplementation compared to the placebo group. This clearly shows that the supplementation worked well in managing erectile dysfunction among these men.

Clinical Proof #2

Scientific research has been conducted by Zenico and co-researchers in 2009 which confirms these beneficial effects that Maca extract is believed to have on erectile function.50 men who were suffering from mild erectile dysfunction were made a part of the study and put into 2 treatment groups.

  1. Group 1 was given maca extract 2400 mg for 12 weeks
  2. Group 2 was given placebo (substance which is similar to maca extract but does not have effects of maca extract) for 12 weeks.

The treatment effect of both these treatments were tested by making the participants of the study fill up the International Index of Erectile Function (IIEF) and Satisfaction Profile (SAT-P) questionnaires before and after the treatment (i.e. maca extract supplementation or placebo). Higher score in these questionnaires mean better erectile function.

erectile dysfunction improvement with Maca

There was increase in IIEF scores in participants of both treatment groups but this increase was much higher for Group 1 (ref: Graph 1). Similarly, SAT-P scores of Group 1 showed better improvement than Group 2 (placebo). Maca extract supplementation has a favorable impact on erectile function in men having mild erectile dysfunction.


Yohimbine is a plant product, derived from the bark of the Pausinystaliayohimbe plant. The natural form of yohimbine (pausinystaliayohimbe bark) is unsuitable for human consumption. That is why its extract is used for supplementation purpose.

yohimbine tree

Yohimbine is a stimulant believed to have aphrodisiac properties. It has been commonly used by men to increase virility and erectile rigidity and is also called “herbal Viagra” due to its properties.

It should be used with caution as it is known to cause adverse side effects when used with any type of anti-depressants or antipsychotic drugs, alcohol as well as caffeine (commonly consumed food stuffs which have caffeine are tea, coffee and carbonated drinks).

Also, Yohimbine should ideally not be taken by people who are already taking pro-erectile drugs i.e. drugs which help in treating erectile dysfunction.

Yohimbine supplements are commercially available as soft gels and capsules. Various research studies have been carried out to find out the best and most effective dosage of Yohimbine and they suggest the following doses:

  • People who are taking only Yohimbine (no other supplements), recommendation is 0.2 mg per kg body weight i.e.
  • 14 mg for a person weighing 150 lb
  • 18 mg for a person weighing 200 lb
  • 22 mg for a person weighing 250 lb and so on.

Researchers suggest a gradual build up to the recommended dose to make sure you don’t suffer from any adverse effects due to the supplementation.

Several side effects of this supplement are noted by researchers. The common among them are headache, flushing of skin, less hunger, dizziness, irritability and difficulty in sleeping.

Some people suffer from side effects like nausea, diarrhea, pain in the genital areas, breathlessness, joint and muscle pains, anxiety and pain in muscles when they take high doses of Yohimbine.

It is therefore extremely important that you consult your healthcare provider before you start taking Yohimbine supplementation and adjust the dose as per your tolerability.

You should start with half the recommended dose and then slowly increase it to actual recommended dose.

  • For people who are using other supplements as well;
  • Start with ¼ of the recommended dose (0.2 mg per kg body weight) and go up to only ½ of the recommended dose

For those people who don’t use Yohimbine frequently, it is recommended that they should not use it with other supplements. Research also says that taking yohimbine 30 – 45 minutes before bed may impair sleep.

Many research studies have been done in the past to check if Yohimbine is effective in treatment of erectile dysfunction and helpful in enhancing the libido in men.

Clinical Proof #1

Ernst and Pittler compiled the results from 7 such research studies in 1998 to examine the effects shown in all of them. All these trials involved two treatment groups, one of which was given yohimbine supplementation and the other was given a placebo.

In each of these research studies, the groups which was given real yohimbine supplementation treated erectile dysfunction much better and more effectively than the placebo group.

The scientists also examined whether the yohimbine supplementation caused any serious side effects in the men to whom it was given. They found that serious side effects occurred very rarely and those that did occur were easily treatable.

Yohimbine is a reasonably good treatment option for men suffering from erectile dysfunction because it gives good treatment benefit with very little risk of serious side effects.

Clinical Proof #2

Another scientific research done on 18 non-smoking men with erectile dysfunction which showed reasonable effectiveness of Yohimbine supplementation in treating their disorder. Since the effect of Yohimbine is known to be obstructed by tobacco, non-smokers were involved in the study to know true and proper effect of Yohimbine.

Guay and co-researchers did this research study in 2002 where they measured the nocturnal penile tumescence in these men with a Rigiscan monitor, their hormone profiles and answers to the Florida Sexual Health Questionnaire.

NPT or Nocturnal penile tumescence is the involuntary penile erection when a man is asleep or awake. Generally, in absence of erectile dysfunction, men experience involuntary penile erection (NPT) about 3 to 5 times a night. Experts say that NPT improves a man’s penile health.

Half of the men in the study (50%) were able to complete sexual intercourse in more than 75% of attempts. A comparison of all the above mentioned parameters (NPT, hormone profile and the Florida Sexual Health Questionnaire) before and after yohimbine supplementation clearly showed that men who had milder erectile dysfunction showed improvement while those with severe erectile dysfunction failed to show much improvement.

L-Arginine & Pycnogenol

Pycnogenol is the brand name of a product derived from the bark of a tree known as Pinus Pinaster. It is used for treating circulatory problems, asthma, allergies, high blood pressure, diabetes, women problems and as an anti-ageing supplement. It is acclaimed for its effect in boosting male fertility and is used widely in treatment of erectile dysfunction among men.

L-arginine is basically a non-essential amino acid that combats blood clots, arterial plaque buildup and platelet clumping. It is known to thereby enhance blood flow through the coronary artery and is commonly sold as a health supplement claiming to improve vascular health and treat erectile dysfunction in men.

Individually, both L-arginine and Pycnogenol are known to promote virility in men, but together they really shine as a possible treatment to alleviate erectile dysfunction, which is why we have clubbed them together.

The following research study affirms their benefit in improving erectile function among men when taken together.

Clinical Proof

This research was done by Stanislavov and Nikolova in 2003. It involved 40 men in the age group of 25-45 years who were suffering from erectile dysfunction.

These men were given supplement for 3 months as follows:

  • 1st month: 1.7 g L-arginine per day for 3 months.
  • 2ndmonth:1.7 g L-arginine per day + 40 mg Pycnogenol tablets (twice a day)
  • 3rd month: 1.7 g L-arginine per day + 40 mg Pycnogenol tablets (thrice a day)

Each participant was made to fill up a Sexual Function Questionnaire and a Sexual Activity diary for the duration of supplementation i.e. 3 months. The information from these were used to know the effect of supplementation on the participants over the 3 months.

The researchers wanted to see the time taken and number of people who benefited by the supplementation. They found out how many men were able to experience normal erection at the end of 1st, 2nd and 3rd month of supplementation. The results so obtained, over time are shown in the graph below.

Ed treatment results when men with ED were treated with combination of L-arginin and Pycnogenol

At the end of the first month of supplementation, a small number of participants (5%) had improved sexual function while this increased by 75% to reach 80% after 2nd month and reached 95% by the end of the 3rd month.

Strong, positive results emerged from this trial, confirming the beneficial effect of L-Arginine + Pycnogenol supplementation on erectile function among men suffering from erectile dysfunction.

Korean Red Ginseng

korean red ginsengKorean Red Ginseng is a plant which grows in Asia. It is therefore also known as Asian Ginseng, Chinese Ginseng or Panax Ginseng. Ginseng supplement contains the root of this plant. When the root is allows to dry, it forms white ginseng. When it id steamed and then dried, we get red ginseng.

The root of Ginseng plant has been used traditionally as a medicinal plant for treatment of erectile dysfunction in men. Erectile dysfunction is characterized by inability to get or keep an erection during sexual activities.

Red Ginseng has been studied with respect to its ability to cure impotence (erectile dysfunction) in men as well as declining sexual function in postmenopausal women.

It is commercially available as liquid, powder and capsule. Even the dried root form of ginseng is available which can be added in tea while preparing it.

Recommended dosage of Ginseng for treatment of erectile dysfunction in men is daily dosage of 900-1000 mg, 3 times a day. The recommended dose should never be exceeded and care should be taken to avoid mixing Korean red ginseng with medications and caffeine. It is wise to consult your health care professional before starting this supplementation.

There are some safety concerns for using this supplement. When used for less than 3 months, it seems safe for most adults. However, a common complaint among Ginseng users is difficulty in sleeping (insomnia).

Some people face problems such as palpitations (fast heart beats), abnormal blood pressure, dizziness, headache, decreased hunger, diarrhea, skin irritations like itching and rash etc. Women may also suffer from mood swings, vaginal bleeding, pain in the breast and irregular periods. People suffering from heart conditions, diabetes, bleeding conditions, auto-immune disease, mental disorder and organ transplant should avoid it.

Clinical Proof #1

Andrade and co-researchers conducted a trial in 2007 on 60 men who were suffering from erectile dysfunction. These men were divided into 2 treatment groups.

  1. Group 1 was given 1000 mg Korean Red Ginseng (KGR) 3 times a day
  2. Group 2 was given a placebo (substance which is similar to Korean Red Ginseng but does not have properties of it)

The men were put into these two groups at random i.e. neither researcher nor the participants of the trial could decide which group they would be out into. Also, neither researchers nor the participants were aware which groups was being given which treatment.

The men participating in the trial filled the International Index of Erectile Function (IIEF-5) before and after supplementation so that the before and after scores could be compared to know if there was improvement (if any) in the scores.

IIEF scores with korean red ginseng

Nearly 66.6% of men who were given Korean Red Ginseng reported an improved erection. The group which was given Korean Red Ginseng supplementation had higher average score on the International Index of Erectile Function i.e. had better Erectile Function after treatment while the placebo group showed very marginal improvement in the score.

Clinical Proof #2

In 2009, a clinical trial was conducted by Kim and fellow scientists to measure the effect of Korean Red Ginseng in men who suffered from erectile dysfunction.The Korean RedGinseng was supplemented in the form of tissue-cultured mountain ginseng extract. 143 males with erectile dysfunction were involved in this trial and were divided into 2 treatment groups.

  1. Group 1 was given 1000 mg tissue-cultured mountain ginseng extract, twice a day for 8 weeks
  2. Group 2 was given 1000 mg placebo, twice a day for 8 weeks

These two treatment groups were made at random and which men would be put into which group was decided haphazardly. The effect of the supplement on the participants of the trial was measured using the International Index of Erectile Function Questionnaire.

Participants were required to fill this questionnaire once before starting the supplement and then after 8 weeks (i.e. after end of supplementation period. Higher scores indicate better sexual function.

Result highlights:

  • Scores of Group 1 improved remarkably while little improvement was seen in the scores of placebo group before and after supplementation.
  • Overall satisfaction scores and erectile function was much better after supplementation among men who were given the ginseng extract.

Tissue-cultured mountain ginseng extract proved to be an effective treatment option for improving erectile function among men.


This is a vitamin-like substance which is present in the cells of our body. It is involved in the generation of energy in the body. It is sold as a dietary supplement and is believed to be useful in improving erectile function.


It is commercially available as soft gels and tablets. For treatment of male infertility and erectile dysfunction, dosage of 30-300 milligrams taken by mouth, once daily or in divided doses for up to 26 weeks is recommended by experts. The dose can be taken for up to 6 months. It has shown to be effective in treating erectile dysfunction among men.

Coenzyme Q10, when taken in recommended dosage, under medical guidance is safe for most adults. However, it may sometimes cause mild side effects pertaining to digestion such as loss of appetite, stomach upset, nausea and diarrhea. It may also cause skin rash and is known to affect blood pressure. Experts say that dividing a single daily dose into 2 or 3 smaller doses per day can help in reducing these side effects.

A research done on men with Peyronie’s Disease (a penile disorder) found Coenzyme Q10 to be useful in improving erectile function. It has been discussed below.

Clinical Proof

This scientific study was published in the International Journal of Impotence Research in 2010. It was done primarily to know if Coenzyme Q10 supplementation was safe and effective for usage by men with Peyronie’s disease.

Peyronie’s disease is caused by scaring which forms along the length of the penis. This plaque is not visible, and depending on the severity of the condition, the plaque can cause the penis to bend, making sexual intercourse difficult and occasionally painful.

186 men with Peyronie’s disease participated in this scientific study and were randomly divided into two treatment groups.

  1. Group 1 had 93 participants who were given 300 mg Coenzyme Q10 daily
  2. Group 2 had 93 participants who were given placebo (substance which is similar to Coenzyme Q10 but does not have the properties of Coenzyme Q10)

Each treatment group was given treatment (Coenzyme Q10 or placebo respectively) for 24 weeks.

The participants filled the International Index of Erectile Function before starting treatment, then every 4 weeks during treatment and then at the end of treatment (24 weeks). A higher score in this questionnaire means better erectile function.

IIEF score with COENZYME Q10 supplementation

As seen in the graph above, the men in group 1 (those who were given Coenzyme Q10 supplementation), had much higher scores than the placebo group suggesting a much greater improvement in their (group 1) erectile function compared to Group 2. Also, the mean plaque size and penile curvature decreased in Group 1 while they increased in Group 2.

peyronie disease progression with coenzyme supplementation

Peyronie’s disease increased (progressed) in many more men of Group 2 compared to Group1. Coenzyme Q10 supplementation seems effective in improving erectile function in men suffering from Peyronie’s disease.


Citrulline is a non-essential amino acid, meaning that the body can manufacture it from other nutrients that we eat and we don’t need to take it from diet or other external sources. Important dietary sources of Citrulline are watermelon, garlic, onion, chick peas, peanuts, fish, red meat, liver, almonds, walnuts and dark chocolate.

Citrulline is commercially available in powder and tablet or capsule form. It is very commonly available in combination with arginine (another amino acid) as this combination is believed to bring more health benefits than beneficial than Citrulline alone.

Citrulline is known to help in managing a number of disorders in our body such as alzhemier’s disease, dementia, fatigue, improved athletic performance, high blood pressure and erectile dysfunction in men. It is also responsible for removing toxins from the body.

All these functions are much more effective when Citrulline is used in combination with Arginine compared to Citrulline alone. Scientific studies have explore its role in treating erectile dysfunction in men and it has shown positive results.

The recommended dosage range for Citrulline supplement is 2-15 gm per day. This however, depends largely on the person’s age, sex, medical history and other medications that the person is currently taking.

Citrulline supplements should be avoided by pregnant and breast feeding women as the effects of this supplement on these women have not been fully confirmed by scientific studies.

Clinical Proof

Cormio and co-researchers gave L-Citrulline supplement to 24 men with mild erectile dysfunction to see if it was helpful in improving erectile function in them. The average age of themen participating in the study was 56.5 years.

Erection Hardness (EH) score is a way to measure the degree of erectile function among men which helps in classifying the erectile function as normal, mild, moderate or severe. An EH score of 4 means normal erectile function while 3 denotes mild erectile dysfunction. This study involved men with an EH score of 3 i.e. mild erectile dysfunction.

The men enrolled in the study were initially given a placebo for the first one month to ascertain the psychological effect of treatment on the patients who feel that they are being given the drug although they are not really receiving it.

During the second month, the same participants were given1.5 gm/day L-Citrulline (real supplement).To know the effect of supplementation on these men, their EH score, number of intercourse per month, treatment satisfaction and side effects of treatment were studied.

erection improvement with L-Citrulline

While only 8.3% of the men experienced normal erections when they were given placebo, this number went up to 50% when real supplementation (L-Citrulline) was given to them (ref: graph above).

frequency of intercourse while undergoing treatment with L-Citrulline supplementation

Similarly, the frequency of intercourse which was 1.4 per month before start of study, became 1.5 after 1st month (placebo) and showed a further increase (1.4 – 2.3) when L-Citrulline was given i.e. at the end of 2nd month.

All the men who’s EH score increased from 3 to 4 i.e. from mild erectile dysfunction to normal reported that they were very satisfied by the supplementation treatment. No serious side effects of supplementation were observed.

L-Citrulline supplementation is helpful in improving erectile function in men who have mild erectile dysfunction.


L-carnitine is a vitamin-like amino acid helps energize our mind and promote concentration by maintaining healthy brain functions. It is also responsible for conversion of fat into energy which is then used by our body for performing various biological functions.


It is not normally considered as an “essential” nutrient (a nutrient which needs to be taken externally in form of food/supplement) because the body manufactures enough L-carnitine for fulfilling our requirements. Also, it is available from commonly consumed foods such as milk & milk products and meat, particularly red meat.

However, in some people there may be a genetic defect which prevents production of carnitine in body. Additionally, certain disorders of liver, kidneys and brain may also impair the production of enough carnitine. Some medications may also cause carnitine deficiency. In such cases, it becomes necessary to supplement carnitine to ensure normal smooth functioning of our body.

Even in the absence of deficiency, L-carnitine supplementation has shown promise for improving erectile function in men. It is available commercially in tablet, capsule and liquid capsule form. Recommended dosage is in the range of 500 – 2000 mg of propionyl L-Carnitine once a day which is often used in combination with a 50 mg dose of Viagra which is given twice a week.

Clinical Proof

A scientist named Gianfrilli, along with co-scientists did a trial on 51 men who were suffering from erectile dysfunction. These men were given supplementation of popionyl-L-carnitine, L-arginine and niacin for a period of 3 months to see if it helped improve their erectile function.

The study participants (51 men) were asked to fill two questionnaires: International Index of Erectile Function (IIEF) questionnaire and Global Assessment Questions (GAQs)

The participants filled these questionnaire twice. Once before starting the supplementation and then after 3 months i.e. after supplementation was over.

Along with these questionnaires, routine laboratory testing was also done for these men once before and then after the supplementation period.

A comparison of the IIEF questionnaires filled before and after supplementation, showed a significant improvement in different areas of sexual functions among the men at the end of 3 months. The answers of the Global Assessment Questions were also studied.

Results are presented in the graph below.

erection response with L-carnitine supplementation

A large majority (77%) of the men who were given supplementation showed some improvement in their sexual function while many of them (40%) showed improved erections at the end of 3 months.

Supplementation proved effective is improving erectile function in many men in this trial. It should be considered as a potentially effective treatment for erectile dysfunction.


Tongkatali, also known as Eurycoma longifolia is widely believed to be a potent natural remedy to improve erections, virility and libido. That’s a big claim. Let us see some research.


Clinical Proof

In 2012, a scientist, Ismail along with his co-workers conducted a scientific trial on 109 men (aged 30 – 55 years) to check if Tongkatali(Eurycoma longifolia) actually had the benefits that is believed to have. He divided these men randomly into 2 groups.

One group was given 300 mg of freeze-dries water extract of Tongkatali while the other was given a placebo.

The effect of the supplementation was checked using Quality of Life (SF-36 questionnaire) which included questions about physical functioning, social functioning, mental health, vitality and general health perception.

The participants of the trial were asked to complete this once before the supplementation, then after 6 weeks of treatment and then again after 12 weeks after supplementation.

Sexual Wellbeing of the trial participants was investigated by International Index of Erectile Function (IIEF), Sexual Health Questionnaires (SHQ), Sperm motility and Semen volume.These assessments were made once before start of the study and then after 12 weeks of supplementation.

The physical functioning of Group 1 (which was given supplementation) had improved after supplementation. It was also much better than that of placebo group when both groups were compared at 12 weeks after supplementation.

Erectile function, Sexual Libido, Sperm motility as well as Semen volume had improved in Group 1 which clearly indicates the positive role of Tongkatali supplementation in enhancing quality of life and sexual well-being among men.


L-DOPA structureL-DOPA, also known as Levodopa is an amino acid supplement which plays a role in the formation of dopamine. Dopamine is a hormone and neurotransmitter which plays many important roles in the human body.

L-DOPA supplementation is believed to improve sexual function among men by treating erectile dysfunction and improving penile strength and tumescence (erection).

In addition to this, L-DOPA is also known to boost overall brain function, mood improvement and general sense of well-being. It is also a powerful anti-oxidant known to remove harmful toxins from the body.

L-DOPA supplements are available commercially in powder form as well as capsules. The recommended dosage of L-DOPA lies in the range of 250-500 mg per day.

It is advised to have a gap between subsequent cycles of L-DOPA supplementation so that your body does not get dependent on the L-DOPA supplementation and reduce its own production of the same.

While L-DOPA is considered as a safe supplement, some mild side effects may be seen with its use. Some of these are low blood pressure, hair loss, confusion, anxiety and insomnia. These effects are however visible with high doses and in some people only. Nevertheless, caution should be exercised during its use.

With regards to its effective on men’s sexual health, research says that L-DOPA supplementation in men with normal sexual function increases penile girth among younger men (younger than 50 years) and improves penile tumescence in older men (50 years or older). These effects were seen only in those men who had normal testosterone levels.

Clinical Proof

A team of researchers led by a scientist called Horita conducted a trial on 21 men to see the effect of L-DOPA Supplementation on their erectile function. Out of these 21 subjects, 12 were at least 50 years old while the other 9 were younger than 50 years.

The erectile function of these men was assessed by checking their NPT parameters; frequency and duration of Nocturnal Penile Tumescence.

NPT or Nocturnal penile tumescence is the involuntary penile erection when a man is asleep or awake. It is a normal phenomenon which occurs in men who do not have erectile dysfunction and is known to improve penile health.


  • In those men who were at least 50 years old, there was significant improvement in both NPT parameters. This improvement was seen only in those men who had normal androgen levels (i.e. normal levels of male sex hormone).
  • Among the younger men (<50 years), there was a substantial increase in the maximum penile circumference after receiving L-DOPA supplementation.

The study proves a cause and effect relationship between L-DOPA supplementation and normal erectile function in men. Giving L-DOPA to men (50 years and more) may improve their erectile function while among those who are younger than 50 years, it may help in increasing their maximum penile circumference.

Tribulus terrestris

Tribulus terrestris is a powerful medicinal plant with strong evidence of libido enhancement properties, but its potency to improve erections in men with erectile dysfunction is not as clear.

Tribulus Terrestris

In the lab it does seem to indicate definite increase in intracavernous pressure for rabbits and mice and there are some human trials that report promising results, but there are also studies where the results were unclear.

Nevertheless we are including this in the roundup because there are studies where its poterncy is clear and even in the clinical trials where the potent effects were not significant, it always atleast showed marginal improvement in erections and testosterone.

Clinical Proof

A researcher named Sellandi, along with co-researchers conducted a scientific study in 2012 to see if Tribulus Terrestris was actually as effective as believed by traditional Indian and Chinese medicine.

This study was done on men with oligozoospermia (low sperm count) which is one of the leading causes of male infertility. Men, in the age range of 21-50 years who were suffering from Oligozoospermia were included in the study and put into 2 treatment groups.

  1. Group 1 was given Gokshura(Tribulus Terrestris) granules for 60 days
  2. Group 2 was given Placebo for 60 days.

Improvement (if any), in the sexual health of participants was measured by asking them to fill a “Quality of Sexual Health Questionnaire” before and after treatment. There was a mild improvement in both erections and testosterone.

The evidence that it improves erections is not strong here, but when you consider that it improves libido and slightly enhances testosterone apart from mildly improving the erections – we feel compelled to include Tribulus Terrestris as a supplement that promotes overall good sexual health.


Hopefully this article will help you in your journey to improve your sex life. Never give up – a positive outlook, good exercise and the right diet can go a long way in restoring your sexual performance. If you need to discuss about any sexual problems you have then you may also have a look at erectile dysfunction forum. All the best!