E longifolia is a medicinal plant (family Simaroubaceae) native to Indonesia, Malaysia, Thailand, Vietnam and Laos. The root extract has been found to be the most powerful herbal aphrodisiac . Tongkat ali extracts contain many alkaloids, quassinoids, phenolic compounds, tannins, high-molecular-weight glycoproteins and mucopolysaccharides. The main bioactive compounds are eurycomaoside, eurycolactone, eurycomalactone, eurycomanone and pasakbumin-B. It is considered to be natural ‘Viagra’. It increases sexual desire, and enhances performance and general well-being [17- 19]. In addition to its aphrodisiac effect, other medicinal effects, such as antimalarial, antibacterial, antipyretic, antiulcer and antitumour effects, have been reported [20,21]. Root decoction has been used as a general tonic (18,22]. Laboratory animal studies show that root extract enhances sexual characteristics and performance in rodents [22-25]. In a study involving a boar model, it was found that E longifolia root extract-treated boars increased sperm counts and semen volume; the effect was attributed to increased level of plasma testosterone . Reports also suggest that E longifolia extract reverses the inhibitory effects of estrogen on testosterone production and spermatogenesis in rats . Oral administration of E longifolia extract to inexperienced castrated male rats produced dose-dependent increases in sexual performance . Zakaria et al  found that eurycomanone, a potential bioactive compound in the root extract of E longifolia, induced apoptosis in hepatocarcinoma (Hep G2) cells. Furthermore, their work suggested that eurycomanone was cytotoxic to Hep G2 cells and less toxic to normal Chang’s liver and WLR-68 cells. Tambi and Imran  investigated the effects of water-soluble extract of the root of E longifolia Jack and found that the extract increased semen volume, sperm concentration, percent of normal sperm morphology and sperm motility in male partners of subfertile couples with idiopathic infertility. Supplementation with E longifolia elevated the testosterone levels and upregulated osteoprotegerin gene expression in male Sprague-Dawley rats .
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.
Refusal from smoking can be considered another ED cure. The matter is that the impairment of erectile function is often a result of cardiovascular disorders. Such disorders don’t let the blood normally flow through the body. Blood delivery to the manhood also suffers since the arteries are blocked or narrowed. This is exactly what happens during smoking.
This African tree has proven to be effective and considered as one of the best herbal remedies for erectile dysfunction naturally. As a matter of fact, many clinical trials usually express improvement for almost all who is facing sexual challenges as a result of depression medications. However, this is not without some noticeable side effects like anxiety, irregular heartbeat and high blood pressure.
A number of nonprescription products claim to be herbal forms of Viagra. Some of these products contain unknown amounts of ingredients similar to those in prescription medications, which can cause dangerous side effects. Some actually contain the real drug, which should be given by prescription only. Although the Food and Drug Administration has banned many of these products, some potentially dangerous erectile dysfunction remedies remain on the market.