What exactly are natural remedies for erectile dysfunction? They're usually herbal compounds found in certain plants that grow around the world. Many people are skeptical that mere plants can cure impotence. What they often don't realize is that chemicals found in plants form the basis for most of the major pharmaceuticals approved by the FDA.

The following herbs are among the most famous and effective natural aphrodisiacs:

Tongkat Ali--Recent scientific studies show that this Indonesian herb increases testosterone levels in men. Testosterone increases sperm production, libido, and stamina. Men's testosterone levels peak in their teen years and then decline. Men who use tongkat ali often report an increase in erection strength and staying power. This herb is commonly used by athletes and body builders because it builds muscle mass and strength.

Catuaba Bark--This is probably Brazil's most renowned aphrodisiacal plant. One British researcher writes about catuaba bark, "it is in the area of male impotence that the most striking results have been reported" and "there is no evidence of side effects, even after long-term use."

Mucuna Pruriens--This is an important libido enhancer because it increases dopamine levels. Ever wonder why you feel totally uninterested in sex after an orgasm? It's because your prolactin levels have shot up. Dopamine acts as a prolactin suppressant. It's been discovered that many men who have problems achieving and maintaining an erection have abnormally high prolactin levels. For this reason, mucuna pruriens is one of the most valuable natural remedies for erectile dysfunction.

Maca--This herb is an extremely popular in South America. If you visit Peru you'll see maca products sold everywhere. Maca is famous for boosting energy and sexual stamina. In fact, the Incans used to eat maca before going into battle so they would fight longer and harder.

Horny Goat Weed--People often laugh at the name, but there's nothing funny about this amazing plant's ability to enhance erections. This herb has occupied a key place in traditional Chinese medicine for over 2,000 years. It works by increasing levels of nitric oxide, which allows more blood to flow to the penis.

There herbs have been used for centuries to improve sexual performance. Yet many people who take herbal supplements today find them totally ineffective. The reason is improper dosage and low quality herbal ingredients. The herbal remedy business is largely unregulated and many unscrupulous companies take advantage of that.

But there are some products that use a superior grade of herbs in large enough doses to be effective. One of the most popular natural enhancement products is called Zenerx. The company is highly reputable and has been around for a long time. Its customer base is extremely loyal. These are all good signs. The makers of Zenerx follow strict FDA guidelines when it comes to manufacturing their product. They test and re-test to make sure the ingredients are pure and mixed together just right.

If you're going to try one of the natural remedies for erectile dysfunction, Zenerx is the one you want to try first.