An erection begins with sensory or mental stimulation, or both. Impulses from the brain and local nerves cause the muscles of the corpora cavernosa to relax, allowing blood to flow in and fill the spaces. The blood creates pressure in the corpora cavernosa, making the penis expand. The tunica albuginea helps trap the blood in the corpora cavernosa, thereby sustaining erection. When muscles in the penis contract to stop the inflow of blood and open outflow channels, erection is reversed.

Zenerx studies have been conducted to show how it works to increase blood flow to the penis (similar to Viagra®), reduce prolactin and increase testosterone levels. All are important to achieve large, strong erections.

Viagra® works by increasing the body's effectiveness at using Nitric Oxide a key chemical required to produce an erection. Viagra® is designed to treat ED just this one way. While Viagra® is a very good drug treatment for many men with ED, doctors know that there are many different causes of ED, small weak erections or a weak libido.

The herbal ingredients in Zenerx's unique formulation (see ingredients for more details) have a demonstrated multi-faceted positive effect on your erection, blood flow and key areas of your overall health. They provide nutrients to help all aspects of male sexual performance (not just increase blood flow to the penis) as well as preventative many conditions that can cause ED and weak male sexual performance.

Benefits (concluded from the Zenerx Studies) include:

Better usage of Nitric Oxide: A key chemical required to produce a large erection and increase blood flow to the penis Increased testosterone: Required for a healthy libido, strong performance, faster recovery, greater strength and more energy Decreases prolactin: High levels of prolactin can cause erectile dysfunction Increase circulatory health: Required for strong blood flow to the Penis

Increase sperm production and motility: Creates large, strong ejaculations and healthy sperm

Increase skin tissue and muscle health: Increased sensitivity, control, stamina and minimal recovery time

Increased health of the nervous system: Required for maximum sensitivity, sensation and pleasure

Calms and sharpens the mind: Reduce performance stress and anxiety, creates increased confidence and positive mental state Protects against diabetes, hypertension, atherosclerosis, & heart disease: These medical conditions are often the cause of impotence, erectile dysfunction or weak performance

Anti-oxidant and Human Growth Hormone (HGH) stimulator: Creates "Fountain of Youth Effect", regenerates and protects the body providing more energy and stamina

Studies have also shown that several components in Zenerx give it a bigger advantage over other male enhancement pills. Some of them are:

Shilajit: Shilajit is found to supply an anti-oxidant to guard against not a few free radicals. Processed Shilajit provides total protection to methacrylate against hydroxyl radicals, encouraging polymerization and performing as a reversible nitric oxide-captodative agent. These results are constant with the therapeutic uses of Shilajit as an Ayurvedic (rejuvenator) against oxidative stress and as a solution to geriatric complaints of erectile dysfunction.

Horny Goat Weed herb: For more than 2500 years, horny goat weed has been used as a sexual and reproductive stimulant. This herb performs in various ways to increase erection ability, size, and fullness. Horny goat weed has a recognized flavonoid called icariin. Icariin is a GMP-specific PDE5 inhibitor like Viagra, Cialis, and Levitra. This was revealed in a 1984 University of Peking study. In conclusion, horny goat weed can re-establish low levels of both testosterone and the thyroid hormone to standard levels and improve sex drive.

Muira puama herb: Muira puama is a South American herb that has been employed for centuries to treat erectile dysfunction and a weak libido. Two new French studies supported its outcome of treating impotence.