The neurovascular mechanism of erection is complex and involves multiple factors including hormones, neurotransmitters, elements of the autonomic nervous system (sympathetic and parasympathetic) and vasodilators such as NO. The common causes of ED include psychogenic disturbance with failure to relax cavernous smooth muscle, arterial insufficiency as a result of atheromatous disease, damage to the parasympathetic nervous system, spinal cord injury, diabetes or following pelvic surgery such as radical prostatectomy, radical cystectomy or bowel resection [4]. It is important to note that cavernous nerves are unique in that although they belong to the autonomic nerves system they do not release either acetylcholine (Ach) or norepinephrine; however, they release NO in the penis. NO relaxes the smooth muscle of the corpora cavernosa via cyclic GMP (cGMP), allowing expansion of the cavernosal lacunar spaces, blood flow and erection. Thus, NO is not a direct dilator of the smooth muscle of cavernosal bodies, but it is an important mediator in this process. Erectile function may also be adversely affected by cigarette smoking, excess alcohol consumption, obesity and systemic diseases such as mononucleosis, hepatitis, HIV and cancer. Some men are prone to develop an erection that fails to subside after ejaculation (ie, priapism). The condition is associated with sickle-cell disease and leukemia, or may be a result of intracavernosal injection of drugs such as prostaglandin E1 [4]. Peyronie’s disease causes a physical bend in the erect penis and also contributes to ED.
Having your current medication checked – if you are taking medication already, it could be that your erection problems are a side effect. Have a doctor check whether this is the cause of your problems and if it is, you might be able to switch medications and then find that your erectile dysfunction goes away completely – or at least improves. Medications that can cause erection problems include:
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Tribulus Terrestris is the fruit of the Zygophyllaceae plant and it grows primarily in North China. It is a well-known aphrodisiac with records that trace back to ancient times. There are plenty of animal experiments that verify the effectiveness of Tribulus for improving erectile function. These effects are mostly due to its androgen enhancing ability, namely increasing testosterone levels. Though testosterone doesn’t directly cause an erection, it does play a role. Erection is made possible by many factors, but mostly it's through receptors on cells lining our arteries that stimulate a chain reaction that relaxes the blood vessels that go to the penis, allowing blood flow to get in. Low testosterone is often associated with overall poor metabolic and cardiovascular health. When the test is low, estrogen is usually high, leading to oxidative stress and calcification of the arteries, including the penis, restricting blood flow to the penis. So, improving testosterone levels, and improving overall metabolic function, while reducing oxidative stress is a good plan for improving overall sexual function and erection.
The search for a cure for erectile dysfunction (ED) dates back way before the introduction of Viagra in the 1990s. Natural aphrodisiacs, from ground rhinoceros horn topa chocolate, have long been used to increase libido, potency, or sexual pleasure. These natural remedies are also popular because they’re said to have fewer side effects than prescribed medications.
For many men, stopping smoking is an erectile dysfunction remedy, particularly when ED is the result of vascular disease, which occurs when blood supply to the penis becomes restricted because of blockage or narrowing of the arteries. Smoking and even smokeless tobacco can also cause the narrowing of important blood vessels and have the same negative impact. 
Garlic is one of the most common vegetables found at home that's beneficial in the treatment of sexual impotence. Dr. Mani says, "Garlic has often referred to as "the poor man's penicillin" because it serves as an effective antiseptic and immune booster. Being a sex rejuvenator, it can improve sexual activities that have been damaged due to an accident or a disease. Garlic is important for people who overindulge in sex to protect themselves from nervous exhaustion."

Eleuthero, a distant relative of Panax ginseng, has been used in Chinese medicine for 2,000 years. Eleuthero, also called Siberian ginseng, has been shown to enhance physical performance in several studies. Research shows it has antioxidant, immune-boosting, and cholesterol-lowering properties. A study in the Journal of Ethnopharmacology concludes that the active constituents, eleutherosides, alleviate both physical and mental fatigue.
Do herbs work to rectify ED in the Aging Male? We will take some of these and discuss their properties. These herbals can be found throughout Asia and range from Eurycoma longifolia (Tongkat Ali), Ginseng and Tribulus etc. Those that act as Testosterone releasers have some value especially if the male has andropause and those containing some-pick-me-ups and energizers like Ginseng helps the tired and fatigued male and possibly those with asthenia. Deer horn contains growth factors and taking these do help improve nocturnal erections in the male with somatopause. Popular in historic Singapore was Penis soup and Snake meat (Figure 2), whilst Surabaya was known for Cobra meat and Cobra blood (Figure 3) which had claims of improving erectogenic prowess-the myths and realities concerning these and other Village doctor remedies are what they are—myths!
From the researchers' point of view, the usage of herbal remedies in managing male sexual disorders is useful because of long cultural history of utilisation and the current renewed interest in natural products to sustain health globally. As a way recognising the values and roles of traditional medical knowledge in health care provision, further research into the efficacy and safety of herbal remedies in male sexual disorders is precious in Uganda and beyond. More so, the establishment of rapport between relevant government department in Ministry of Health, modern health workers through collaborative and networking ventures with traditional healers under close supervision and monitoring of herbal treatments is noble.

Tongkat Ali (Eurycoma longiflora) (Figure 7): this native plant found through SE Asia is used as an Aphrodisiac since 1996 (5). It has to be used regularly and works by enhancing the testosterone and cGMP production. Benefits are felt gradually over a period of time, mainly because it enhances the natural biological synthesis of testosterone. When the level is increased, health and vitality are restored. In studies on Mice, Tongkat Ali increases the number of times and duration of sexual performance of the animals under study (8) with testosterone levels increasing up to 440% in some animals. In a recent study on humans, 62% of subjects showed an increase of the free testosterone index indicating it’s biostimulatory effect on steroidogenesis. It has also been shown to increase sperm concentration and motility and increases energy in the individual by enhancing ATP production by 60% thru oxidative phosphorylation.
In addition, when research has shown a nutrient such as zinc or niacin to improve sexual function, it's usually in people who are deficient in it. So, before you stock up on over-the-counter nutritional supplements for ED, speak with your doctor. He can test you for deficiencies and steer you toward the most effective and safest way to treat your erectile dysfunction. 

This study was carried out in areas in and around Queen Elizabeth Biosphere Reserve (QEBR) and some other sub counties such as Katerera, Kichwamba and Kitagata in Bushenyi and Munkunyu, Kayonza and Kitsinga in Kasese districts in Western Uganda. The sampling sites were located in the parishes around the biosphere reserve, and in the selected fishing villages within the biosphere reserve. These included, Katwe, Mweya, Katunguru, Hamukungu, Kahendero and Kayanja Fishing Villages and many other villages.

The field visits and excursions were arranged with the healers for places far from their homesteads or took place concurrently with the interviews and discussions. When going to the forests, game reserves or other areas where herbalists collect plant specimens, prior arrangements were made with the community leaders and park staff. This was done with individuals or groups depending on where the herbs are collected. In the shared areas such as the fishing villages, or the multiple use areas, group and individual excursions were conducted. Some of the medicinal plants that are harvested from distant places such as the Democratic Republic of Congo, other districts and unsafe areas within the reserve were not collected but their local names were recorded. The data collected were to supplement the information on plant names, plant parts used, collection of the herbarium voucher specimens and conservation status of these medicinal plants. The medicinal plants collected were given the voucher numbers and then later identified in Botany Department herbarium of Makerere University.
^Efficacy and safety of pomegranate juice on improvement of erectile dysfunction in male patients with mild to moderate erectile dysfunction: a randomized, placebo-controlled, double-blind, crossover study. - Author: The Male Clinic, Beverly Hills, CA, USA and David Geffen School of Medicine at University of California, Los Angeles, CA, USA. (14 June 2007)
Sildenafil citrate, tadalafil and vardenafil hydrochloride are contraindicated in patients with a known hypersensitivity to any organic nitrates (oral, sublingual, transdermal or by inhalation) due to the risk of developing potentially life-threatening hypotension. Concomitant use of PDE-5 inhibitors is contraindicated with HIV protease inhihibitors (indinavir, ritinovir, saquinavir) as well as ketoconazole, itraconazole, cimetidine and erythromycin, because these drugs are potent inhibitors of cytochrome P450 3A4 and can raise the plasma levels of PDE-5 inhibitors. Coadministration of PDE-5 inhibitors to patients taking alpha-adrenergic blockers such as alfluzocin or tamsulosin may lead to symptomatic postural hypotension, including dizziness and lighheadedness in some individuals.
Nitric oxide is made internally from L-arginine, which is an amino acid found in red meat, poultry, fish, and dairy products. In other words, L-arginine is the building block for nitric oxide, which is essential for erections. A lack of one can lead to a lack of the other. However, there’s a problem when it comes to treating L-arginine deficiency with supplements.
For centuries, men have tried all sorts of natural remedies for erectile dysfunction (ED) -- the repeated inability to get or maintain an erection firm enough for sexual intercourse. But do they really work? It is simply not scientifically known at this point. Furthermore, you take these remedies at your own risk, because their safety profiles have not been established. What follows are commentaries by experts and reviews in the field of alternative treatments that are available over the counter for erectile dysfunction and impotence.
W somnifera (ashwagandha), also referred to as winter cherry (family Solanaceae), grows in Africa, the Mediterranean, India, Pakistan, Bangladesh, Afghanistan, South Africa, Egypt, Morocco, Congo and Jordan [36]. The roots of the plant contain steroid alkaloids and steroidal lactone, which are the main constituents of ashwagandha; these compounds are referred to as withanolides. Among the various alkaloids, withnine is the main constituent. The other alkaloids are somniferin, somnine, somniferine, withananine, pseudowithanine, tropine, pseudotropine, cuscohygrine, anferine and anhydrine. Two acyl steryl glucosides (sitoindoside VII and sitoindoside VIII) have been isolated from the root. The withanolides contain a C28 steroidal nucleus with a C9 side chain and six-membered lactone rings. Ashwagandha root also contains flavonoids and many ingredients of the withanolide class. It has several medicinal applications (aphrodisiac, liver tonic, anti-inflammatory agent, astringent), and is used to treat bronchitis, asthma, ulcers, insomnia, senility and dementia. Clinical trials and studies involving animal models support the use of ashwagandha for anxiety, cognitive and neurological disorders, inflammation and Parkinson’s disease. It also provides cryoprotective benefits to patients undergoing radiation and chemotherapy, and shows beneficial effects for nervous exhaustion. W somnifera is used as an aphrodisiac, sedative and rejuvenative, and is also used to treat chronic fatigue, dehydration, bone weakness, muscle weakness, loose teeth, impotency, premature ejaculation, debility, constipation, senility, rheumatism, nervous exhaustion, memory loss, drug withdrawal symptoms, anxiety and arthritis pain in the knee. Extracts from W somnifera inhibit transcription factor nuclear factor kappa B (NF-κB); thus, it acts as an anti-inflammatory agent. This has been attributed to its ability to interact with IKKB, a kinase that is responsible for the nuclear translocation of NF-κB and activation of inflammatory signalling pathways [37].

For a male, sexual performance carries an identity and the sense of self-esteem in his society. Thus, Sexual performance in the male has an unprecedented importance depending on the erectile function of the male sex organ. In daily life, it is very easy for men to admit having a sore throat or hemorrhoids. However, admitting to having erectile dysfunction is contrary to the male ego and especially so if the dysfunction occurs when he is at mid-life and is getting older and there any suspicion of him entering the phase of male menopause.


Garlic is one of the most common vegetables found at home that's beneficial in the treatment of sexual impotence. Dr. Mani says, "Garlic has often referred to as "the poor man's penicillin" because it serves as an effective antiseptic and immune booster. Being a sex rejuvenator, it can improve sexual activities that have been damaged due to an accident or a disease. Garlic is important for people who overindulge in sex to protect themselves from nervous exhaustion."
Conventional impotence treatments typically involve the use of medications which work with the body's natural chemistry in order to promote the ability to have an erection. Oral medications such as Viagra, Levitra and Cialis are commonly prescribed; injectable medications such as the impotence drug Caverject are also used for treating male impotence.
Garlic is one of the most common vegetables found at home that's beneficial in the treatment of sexual impotence. Dr. Mani says, "Garlic has often referred to as "the poor man's penicillin" because it serves as an effective antiseptic and immune booster. Being a sex rejuvenator, it can improve sexual activities that have been damaged due to an accident or a disease. Garlic is important for people who overindulge in sex to protect themselves from nervous exhaustion."
Older age. A man’s risk increases past the age of 40, as age is the variable most strongly associated with impotence. This is due to changing hormones, higher risk for heart problems and those affecting circulation, and decreased sexual desire that often occurs with increasing age. For example, based on findings from the National Health and Social Life Survey, it’s been found that “men between 50–60 years old are more than 3 times as likely to experience erection problems and to report low sexual desire compared to men aged 18 to 29 years.” (3)
For centuries, men have tried all sorts of natural remedies for erectile dysfunction (ED) -- the repeated inability to get or maintain an erection firm enough for sexual intercourse. But do they really work? It is simply not scientifically known at this point. Furthermore, you take these remedies at your own risk, because their safety profiles have not been established. What follows are commentaries by experts and reviews in the field of alternative treatments that are available over the counter for erectile dysfunction and impotence.
While these side effects mainly create discomfort, some individuals are at risk for more serious, even life-threatening reactions to these drugs. Some men have reported fainting after taking impotence medications, and priapism (a painful condition involving an erection that does not subside after more than four hours) has also occurred as an effect of impotence drugs. This condition can lead to permanent nerve damage; injectable drugs may also cause irreversible damage to the penis if used incorrectly.

If you’ve been to the health food store lately, you’ve seen shelves lined with vitamins and “organic” supplements, each claiming to boost immunity, revitalize organ function, or “promote health.” And it’s working. Supplements are currently a $30 billion industry in the US, with more than 90,000 products on the market, and vitamin use is on the rise. In fact, a recent survey in Journal of American Medicine Association showed that “52% of US adults reported use of at least 1 supplement product.”
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