Horny Goat Weed

Want information about Horny Goat Weed and its effect on male performance?

• View half a dozen published research studies showing how the herb Horny Goat Weed (also known as Epimedium) is useful in enhancing erections.
• Learn which bestselling male enhancement products actually contain Horny Goat Weed. View our top picks.

How Does it Work

Increased blood flow and testosterone.

Horny Goat Weed (also known as Epimedium or Yin Yang Huo in Chinese Medicine) has over a thousand year history as an herb with ability to enhance male erections. The odd name is due to the legend that it was first discovered when a Chinese goat herder noticed the increased copulating activities of his herd after they had grazed on the flowering plant.

The herb Horny Goat Weed has been touted as having multiple health benefits including the ability to help reduce elevated cortisol levels if this stress hormone is elevated and increase circulating levels of testosterone. Three of the most well known ways that Horny Goat Weed relates to stronger more satisfying erections are below:

#1:
A glycoside found in Horny Goat Weed called icariin has been shown to increase the blood flow and pressure in erectile tissue. How? Like sildenafil (the ED drug commonly known as Viagra) the glycoside icarrin in Horny Goat Weed, is said to be able to inhibit the activity of PDE-5. (PDE-5 is short for Phosphodiesterase Type 5: an enzyme known to restrict blood flow to various areas of the body including the penis.)

#2:The icariin in Horny Goat Weed has also been shown to increase nitric oxide levels. Nitric oxide is typically involved in dilating the smooth muscle

X surrounding the penile arteries. As these arteries dilate blood flow into the organ increases. As the spongy erectile tissue of the penis becomes engorged with blood the pressure causes compression of the veins that normally remove blood from the penis. This “trapping” of blood in the erectile tissue of the penis is how the body normally produces an erection. Horny Goat Weed has been shown to effect nitric oxide levels in ways that even other PDE-5 inhibitors like Viagra do not. #3 In an animal study published in the Asian Journal of Andrology the icariin from Horny Goat Weed was shown to have both testosterone like properties and cause increased circulating levels of testosterone.

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Related Studies

Over Half a Dozen Studies Published.

There are over half a dozen studies published in independent medical journals showing that Horny Goat Weed as well as the glycoside icariin found in Horny Goat Weed can impact testosterone levels, and much like Viagra, can inhibit PDE-5, increase penile blood flow and enhance erectile quality.  They include:

Cirigliano MD, Szapary P. Horny goat weed for erectile dysfunction. Altern Med Alert . 2001;4:19-22.

Shindel AW, et al. Erectogenic and neurotrophic effects of icariin, a purified extract of horny goat weed (Epimedium spp.) in vitro and in vivo. J Sex Med. (2010)

Zhang ZB, Yang QT. The testosterone mimetic properties of icariin. Asian J Androl. (2006)

Dell’Agli M, et al. Potent inhibition of human phosphodiesterase-5 by icariin derivatives. J Nat Prod. (2008)

Quinna N, et al. A new herbal combination, Etana, for enhancing erectile function: an efficacy and safety study in animals.   Int J Impot Res. 2009 Sep-Oct;21(5):315-20. Epub 2009 Jun 4. *Etana is a combination formula that includes an extract of Horny Goat Weed.

Liu WJ, et al. Effects of icariin on erectile function and expression of nitric oxide synthase isoforms in castrated rats.

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Horny Goat Weed Information

March 2, 2012 @ 1:40 pm posted by HGWcomsite

Horny Goat Weed on Wikipedia
How Horny Goat Weed Works
About Horny Goat Weed

ERECTOGENIC AND NEUROTROPIC EFFECTS OF ICARIIN

April 17, 2012 @ 11:05 am posted by HGWcomsite

ERECTOGENIC AND NEUROTROPIC EFFECTS OF ICARIIN
For millions of men, erectile dysfunction is a serious and life changing problem. As men age, declining testosterone levels and increasing estrogen levels are not the only factors in diminished sex drive and performance.

A recent study in the Journal of Sex Medicine (Shindel AW, et al. Erectogenic and neurotrophic effects of icariin, a purified extract of horny goat weed (Epimedium spp.) in vitro and in vivo. J Sex Med. (2010)) indicates that oral dosing of Icariin, an active constituent of Horny Goat Weed (Epimedium spp) for 4 weeks may be an effective natural remedy for erectile dysfunction.

How? Icariin has been shown to potentially increase the percent of smooth muscle tissue stimulated by nitric oxide and increase the amount of nitric oxide synthase. This means that horny Goat Weed potentially relaxes the smooth muscle fibers of the penis, allowing more blood to flow into the penis resulting in engorgement and erection.

During sexual stimulation, nitric oxide release is triggered into penile tissue by the parasympathetic nervous system and by skin cells in the penis. Smooth muscles in the penis are relaxed by the nitric oxide and the specialized tissues of corpus cavernosum and corpus spongiosum are allowed to engorge with blood to achieve erection. Cyclic guanosine monophosphate (cGMP) is responsible for relaxing penile arteries to encourage blood flow to the penis. At the same time, blood is temporarily prohibited from leaving the penis allowing it to stay erect for a period of time. Erectile dysfunction can be treated by increasing the availability of nitric oxide and decreasing the breakdown of cyclic guanosine monophosphate (cGMP).
Many of the common prescription drugs for erectile dysfunction work by inhibiting the degradation of (cGMP). Some natural remedies which are also believed to be beneficial in treating erectile dysfunction include arginine, yohimbe, and panax ginseng. Arginine is an amino acid used by the body to produce the nitric acid. Yohimbe and panax ginseng are two botanicals which have been used for centuries to enhance sexual performance. Yohimbe functions to prevent the smooth muscle contraction that reduces penile blood flow and decreases erection. Panax Ginseng functions to increase the release of nitric acid in erectile tissue. While the study above focused on the effects of Icariin alone many products combine several natural ingredients in an effort to support these effects.

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