The Impotence Guide

Impotence Guide Home

Tell Us

Let Us Know About Male Products You Have Used - Good and Bad - Click Here

What Products Would You Like Reviewed? Tell Us Click Here

 

News Article

Studies Show Three Natural Herbs to Have a Similar Physiological Effect as Viagra - Read

 

 

 

 

 

Natural Male Enhancement, Enlargement & Impotence Products

Review: Vig-rx & Zenerx 
Two Popular Herbal Supplements Compared

You May Be Shocked At What We Found in our Review of Magna RX & Zenerx!

There are several herbal ED cures on the market that contain ingredients that have been shown to work like Viagra and have long term positive effects on all aspects of a mans sexual health.

The positive benefits natural herbal supplements provide by increasing erection ability, size, and fullness, as well as treating impotence, are many. They can include bigger, stronger erections, greater sexual performance, increased libido, and better overall health.

There are many male enhancement/impotence products on the market, but buyers should beware of formulations that use potentially hazardous ingredients and manufacturers that do not honor product guarantees (see review criteria for details).

In this review, we examined two of the most popular herbal male enhancement/impotence products: Magna Rx and Zenerx.

Review Summary
(See review criteria for detailed explanation)

Review Criteria Vig-rx Zenerx
Safe &Effective Ingredients    
Shilajit

No

Yes

Horny Goat Weed Yes Yes
Muria Puama Yes No
L-arginine No Yes
Maca Root No Yes
Allium Sativum

No

Yes
Mucuna Pruriens

No

Yes
Tribulus Terrestris No Yes
Tongkat Ali No Yes
Ashwagandha No Yes
     
Non-Herbal Additives No No
     
Overall Male Health Support Ingredients Moderate Significant
     
Dangerous Ingredients    
Yohimbe No

No

     
Other Factors    
Product Guarantee Yes, But Unresolved Yes
Made in the USA Uncertain Yes
Known FDA Complaints or Recalls No No
Known BBB Complaints (filed/resolved) and Legal Action

Yes-Lawsuit Filed

0
Potential Misleading Claims Yes-Lawsuit Filed No
Secure US credit card gateway and processor No Yes
     
Overall Score of 19 (1, .5, 0) 7.0 18.0

Recommendations (See review criteria for details)

Zenerx: Recommended - Click For Zenerx Information

Vig-rx: Buy at Your Own Rick - Primary Reasons: Lawsuit, Non-US Business Entity and Foreign Credit Card Processing.

Review Criteria

Safe, Effective Herbal Ingredients

Our review only included ingredients where we found multiple scientific studies vs. anecdotal evidence to support it's positive effect on functions that are important to producing a strong, full erection, increased libido, and to treat impotence issues. This is not to say that other herbs are not effective, only that we have research backing those listed.

Most of the formulations on the market today work by addressing several areas of the male body that effect a mans erection ability, sex drive and health. The effectiveness of each formulation will vary depending on it's specific ingredients.

For most men, the following effects are most helpful to increase erection ability size and firmness as well as increasing your sex drive. You should look for ingredients that have demonstrated effects in these areas.

1) Increase the effectiveness of Nitric Oxide (like Viagra)

2) Endocrine system improvement. Increased Testosterone and HGH while decreasing prolactin, within the normal range.

3) Improve circulatory and vascular health to provide healthy blood flow.

4) Improve nervous system health.

5) Reduced physiological effects of stress both mental and physical.

Shilajit (Viagra effect)

The anti-stress and adjuvant effects of Shilajit have been evaluated in numerous Indian studies. Shilajit provides an anti-oxidant defense against several reactive oxygen types. Processed Shilajit provides complete protection to methacrylate against hydroxyl radical-induced polymerization, and acts as a reversible nitric oxide-captodative agent. These findings are consistent with therapeutic uses of Shilajit as an ayurvedic (rejuvenator) against oxidative stress and geriatric complaints of erectile dysfunction.

Horny Goat Weed (Viagra effect)

Horny goat weed has been used for over 2000 years as a sexual and reproductive tonic. It acts to increase erection ability, size, and fullness.

Horny goat weed contains a flavonoid called icariin. Icariin is a cGMP-specific PDE5 inhibitor like Viagra, Cialis and Levitra, as demonstrated in a 1984 University of Peking study.

It also functions as an adaptogen by increasing levels of epinephrine, norepinephrine, serotonin, and dopamine when they are low-promoting energy-but reduces cortisol levels when elevated (an anti-stress effect), which causes fatigue and depresses sex drive.

Finally, horny goat weed can restore low levels of both testosterone and thyroid hormone back to normal, improving sex drive. 

L-Arginine (Viagra effect)

L-arginine is an amino acid present in all life forms. Typical food sources include meat, nuts, eggs, milk, & cheese.

Arginine a required building block to enable the synthesis of nitric oxide, which relaxes blood vessels and allows more blood to flow through arteries to the penis. If your body is low on Arginine then Nitric Oxide creation can suffer reducing penile blood flow. L-arginine insures that your body has this critical amino acid required to have strong erections.

In fact, research has shown that the effect of Viagra is increased when combined with L-arginine.

L-arginine also increases sperm count and motility. In one study sperm count was increased in 62% of the men taking L-arginine. Other benefits of L-arginine include improving the cardiovascular function and hypertension.

Allium Sativum - Garlic (Viagra effect)

Yes, good old garlic. In two different 1998 studies-one from the National University of Mexico and another from the Institute of Pharmacology, Toxicology and Pharmacy in Munich, Germany-garlic was shown to "activate nitric oxide synthase", or enhance the nervous system's ability to react to nitric oxide.

Also, there are multiple studies compiled by the Sloan-Kettering Cancer Institute demonstrating garlic’s aid in preventing and having curative effects on several medical conditions which often cause ED. These conditions include high blood pressure, heart disease, hypertension and atherosclerosis.

Mucuna Pruriens

Mucuna pruriens works as a prolactin inhibitor, a growth hormone stimulant, and to increase testosterone.

A US patent was filed in 2002 on the use of mucuna pruriens to stimulate the release of growth hormone in humans. High levels of l-dopa in the mucuna seed are converted to dopamine, which stimulates the release of growth hormone by the pituitary gland. L-dopa and dopamine are effective prolactin inhibitors.

Increased levels of prolactin are considered responsible for 70% of erection failure in men. In one study, ingestion of the seeds in 56 males improved erection, duration of coitus, and post-coital satisfaction after four weeks of treatment. It also promotes spermatogenic effects in men, improving sperm count and motility.

Tribulus Terrestris

Tribulus is a natural testosterone enhancer. It is also said to be an excellent circulatory system tonic, and can help build muscles and strength.

Clinical studies on the sexual activity-enhancing effect of tribulus have shown it to contain protodioscin, a saponin constituent, improving libido in men with impotence due to various causes, libido in women with menopausal symptoms, and sperm motility in infertile and subfertile men.

In another study involving 59 men, ages 22-67 and suffering from a range of sexual dysfunctions, an increase in sexual desire and fantasies, as well as sexual self-confidence, was reported in almost all patients. The subjective experience of pleasure, joy and satisfaction was reported in 80%, erection improved in over 75%, and the duration of intercourse before ejaculation was prolonged in 25%.

Tongkat Ali (Eurycoma longfolia)

The root (long jack root) of the Eurycoma longifolia tree has been used for centuries in Malaysia as a traditional remedy for fatigue, loss of sexual desire, and impotence. This amazing plant has only recently been recognized in the west for it's potency in helping sexual performance issues

The bioactive Glygopeptide compounds in Tongkat Ali were shown to increase free testosterone and decrease SHBG levels in human clinical trials. Both effects assist a man's erection ability, performance and sex drive.


In the study by Ismail Tamby, MD, head of the Human Reproductive Specialist Center in Kuala Lumpur, 90% of the men given Tongkat ali extract reported a boost in their libido and 73.3% reported improved sexual function.

As an added benefit Tongkat Ali contains superoxide dimutase, a powerful anti-oxidant enzyme that inhibits the chain reaction of free radicals harmful to the body.

Ashwagandha

Here is what the Sloan-Kettering Cancer Center said in their Ashwagandha Clinical Summary:

"It (Ashwagandha) is also used as a general tonic, to increase energy and improve health and longevity...  Ashwagandha has shown...antioxidant effects in the brain and...a tranquilizing effect on the central nervous system in animals...human studies suggest Ashwagandha may promote growth in children and improve hemoglobin concentration, red blood cell count, and sexual performance in adults".

Non-Herbal Ingredients

Zenerx does not contain additives.

Vig-rx does not contain additives.

Herbal Ingredients for Overall Health & Help ED Conditions

There are multiple causes of impotence and low sex drive, ranging from mild (low sex drive, weak erections, lack of energy, slow and weak ejaculation) to severe (total inability to achieve erection and complete lack of sexual desire).

These causes can be:

  • Cardiovascular (i.e. restricted blood flow, high blood pressure, heart disease, hypertension, and atherosclerosis)
  • Renal or urological
  • Nutritional (i.e. malnutrition, vitamin or mineral deficiency)
  • Endocrine (i.e. low testosterone or high prolactin)
  • Neurological
  • Muscular & tissue-related
  • Psychological (i.e. stress, anxiety, etc.
Increasing your health in these areas, you can often resolve sexual dysfunction issues. This is perhaps where natural herbal supplements provide the greatest benefit to a man's total sexual performance.

Rating effect on overall health and sexual performance:

Minimal - Ingredients primarily provide support for an erection, with limited benefits in other important areas.

Moderate - Ingredients provide some additional benefits to ED-related conditions and overall health.

Significant - Ingredients provide significant preventative/help benefits to other ED-causing conditions and overall male health.

Potentially Dangerous Ingredients

We reviewed the ingredients in each supplement and cross-checked the ingredients against ingredients identified by the FDA as "Supplement Ingredients With Concerns".

The one common ingredient on this list is Yohimbe, which is considered dangerous and is an ingredient in a number of male enhancement/impotence products on the market.

Our recommendation is to avoid any product containing Yohimbe. There are many other alternative ingredients that have proven effective and are safe.

Source: FDA "Illnesses and Injuries Associated With the Use of Selected Dietary Supplements"

Yohimbe (Pausinystalia yohimbe)

Yohimbe is a tree bark containing a variety of pharmacologically active chemicals. It is marketed in...products for body building and "enchanced male performance". Serious adverse effects, including renal failure, seizures and death, have been reported to FDA with products containing yohimbe and are currently under investigation.

The major identified alkaloid in yohimbe is yohimbine, a chemical that causes vasodilation, thereby lowering blood pressure. Yohimbine is also a prescription drug in the United States. Side effects are well recognized and may include central nervous system stimulation that causes anxiety attacks. At high doses, yohimbine is a monoamine oxidase (MAO) inhibitor. MAO inhibitors can cause serious adverse effects when taken concomitantly with tyramine-containing foods (e.g., liver, cheeses, red wine) or with over-the-counter (OTC) products containing phenylpropanolamine, such as nasal decongestants and diet aids. Individuals taking yohimbe should be warned to rigorously avoid these foods and OTC products because of the increased likelihood of adverse effects.

Yohimbe should also be avoided by individuals with hypotension (low blood pressure), diabetes, and heart, liver or kidney disease. Symptoms of overdosage include weakness and nervous stimulation followed by paralysis, fatigue, stomach disorders, and ultimately death.

Zenerx does not contain Yohimbe or any other "Ingredients of Concern".

Vig-rx does not contain Yohimbe or any other "Ingredients of Concern".

Other Factors

Product Guarantee

It is important that manufacturers stand behind their product with a money-back guarantee. The fact is each individual is different, and some formulations may work better than others for conditions that may cause impotence, small, or weak erections. That's why a 100% guarantee is a must and the manufacturer must follow through with that guarantee.

Made in The United States

By purchasing from companies that only manufacture in the US, you ensure that ingredients are as labeled. Most supplements with other medicinal or non-herbal substances added (such as sildenafil citrate) have been manufactured outside of the US by questionable companies

Check to make sure that the supplement is manufactured in the US and is not sold by a US company importing from abroad. The Vinarol recall is a recent example of this practice.

Because of the number of locations outside of the USA, it is unclear as to whether Vig-rx is manufactured in the USA, or manufactured in a foreign country and then imported.

Zenerx is manufactured in the USA.

Known FDA Complaints or Recall for the Specific Product

We checked to see if there are any known product complaints or recalls registered with the FDA for each of the products reviewed.

Known Better Business Bureau Complaints

We check with the Better Business to determine if there are any complaints and the resolution of the complaints.

Vig-rx and Albion Medical are owned by Leading Edge Marketing, Inc located in the Bahamas (
PO Box CR-56766 Suite #1210 Nassau, New Providence, BS), a tax haven used to create shell companies, protecting assets from US legal and criminal actions. Leading Edge Marketing, Inc. of the Bahamas is owned by Leading Edge Marketing of British Columbia, Canada.

Z
enerx had no complaints filed with the Better Business Bureau nor does it face legal action.

Potentially Misleading Claims

Because we expect companies to shine a positive light on their product, we give them the benefit of the doubt on subjective information. Because every individual is different, results of any herbal supplement or pharmaceutical will vary. That's why our review focuses on proven ingredients. However, if a claim is made that is clearly misleading based on factual evidence, it is considered a potentially misleading statement.

Vig-rx had a number of potential misleading claims and questionable business practices which are the substance for the class action lawsuit in filed in Denver district court.

Zenerx has made no potentially misleading claims.

Secure Ordering via US Credit Card & Processor Gateways

While there are many reliable credit card gateway & processors outside of the US (especially in Canada and Europe) this is another risk factor when ordering online.

The Vig-rx ordering domain is registered to the Leading Edge Marketing address in the Bahamas and the credit card processor is Unipay Processing Ltd. of Cyprus (also named in the US lawsuit). Mail and fax orders are take by TechniPak, LLC in Greeley, CO (also named in the US lawsuit) under the name of Leading Edge Herbals.

Zenerx purchases are processed in the USA.

Recommendations

While both products include a variety of ingredients shown to be effective at increasing erection ability, size, firmness and help impotence, we can not recommend Vig-rx because they do not honor their guarantee by refunding customers money.

Zenerx: Recommended - Click For Zenerx Information

Vig-rx: Buy at Your Own Risk - Primary Reason: Lawsuit, Non-US Business Entity and Foreign Credit Card Processing.

What product would you liked reviewed? Let us know at reviews@ImpotenceGuide.info


Giovanni Magnotti
GM@impotenceguide.info




These statements have not been evaluated by the Food and Drug Administration and are for informational purposes only and should not be considered medical advice.
impotence guide doctor

 Bottom Line

Recommended
Zenerx - Safe, Effective Ingredients, Made in US, Trustworthy Business Record.

Get Zenerx Info

Not Recommended
Vig-rx - Due to unsatisfactory business practices, Consumer Lawsuit, Non-US Business Entity and Foreign Credit Card Processing.

-Details in Review-