Yohimbine is an indole alkaloid derived from the bark of the African yohimbe tree (33). Yohimbine has been noted to treat fatigue, depression, diabetes, and sexual dysfunction. A meta-analysis of seven placebo-controlled trials (34) deemed yohimbine superior to placebo for the treatment of ED with rare adverse events. The proposed mechanism of action (35) is via the inhibition of central alpha-2-adrenergic receptors, decreasing central inhibition of arousal, and increasing penile nerve stimulation resulting in increased NO. Common side effects include headache, sweating, agitation, hypertension and insomnia. Contraindications include patients on tricyclic antidepressants, anti-hypertensives and central nervous system stimulants.
In a study done to determine if vitamin D supplementation would actually help patients with ED, 143 patients with ED were tested to determine vitamin D levels. It was found that of these cases, 46 percent of patients suffered from substantial vitamin D deficiency and only 20 percent were found to have adequate levels of vitamin D. In these cases, it was also determined that inadequate arterial blood flow was the root cause of ED more commonly in patients with low vitamin D levels.  Vitamin D supplementation can improve both these parameters.
Experts feel that treating erectile dysfunction on your own, without consulting a doctor, is unsafe. "If you have ED, the first thing you need is a diagnosis," says impotence expert Steven Lamm, MD, a New York City internist and the author of The Hardness Factor (Harper Collins) and other books on male sexual health. He says men with severe erectile dysfunction probably need one of the prescription ED drugs, which include Levitra (vardenafil) and Cialis (tadalafil) as well as Viagra. But, he says, mild ED -- including the feeling that "you're not as hard as you could be" -- often responds to natural remedies.
Peanuts contain a trove the amino acid L-arginine, which is one of the building blocks of nitric oxide, which aids your efforts under the covers. They also help reduce cholesterol levels. The less cholesterol you have in your system, the easier it is for blood to circulate throughout your body and down, which can help you maintain a firmer erection longer.
In TCM, the meridian system is thought to represent a path through which the life energy qi flows and as discussed in earlier section, the “Jing” (kidney) qi plays an important role in penile erection. Acupuncture helps to correct the imbalances to relieve physical symptoms by stimulating various meridian points. The Shensu (BL23), Zusanli (ST36) and Neiguan (PC6) points represents important acupoints for penis stimulation and thus has a positive homeostatic effect on the autonomic nervous system, and potentially modulate NO release (55,56). While some studies have showed up to a third of patients reported improvement in penile erection and sexual activity, systematic review showed insufficient data to conclude that acupuncture is an effective intervention for treating ED (56,57). Therefore, further scientific research is required to investigate whether there are specific benefits of acupuncture for men with ED before acupuncture can be accepted as evidence-based practice.
Doctors will often recommend certain medications for ED including Viagra, Cialis, and Levitra. These medications can treat ED for many men. But these medications may be unsafe for some men to take, or they don’t help relieve symptoms. In such cases, testosterone replacement therapy is another helpful option. This is prescribed when ED is caused by reduced levels of testosterone.
Dietary supplements are another avenue that patients can explore when it comes to treating their ED. Many products exist on the market but be warned that they may not have the scientific proof that can support claims of better erections. In one study done on multiple supplements that were proven to not work, it was found that patients found improvement in their ED 25 percent of the time. This suggests that supplements that do not work have a "placebo effect." This means that if a patient believes the medication truly works, he will notice improvements in his symptoms. This is a psychological phenomenon and can also be considered a root of why ED can occur. Depression or anxiety are two common reasons for ED and if patients take supplements that they believe will help them, they may have more confidence in sustaining an erection. 
Well I thought this treatment was going to be a piece of cake before I started. I do remember the doctor asking me over and over do I think I want to start treatment. But my levels was high and I want this illness gone, so I decided to go with it. Make sure you take all the right vitamins to cut back on side effects. That was my big mistake but it seemed like any vitamin I took made my symptoms worst.
Erectile dysfunction (ED) or impotence is very common in men with one in 5 men affected by it. Though medical and psychological interventions are sought as treatment, natural remedies have been used traditionally to cure the condition. While foods like onion, garlic, ginger, carrots, and pomegranate juice are known to cure ED, certain vitamins like vitamin C, E, and B3 are effective, too. You may want to try Korean Red Ginseng or supplement your diet with L-arginine. You could also give acupuncture a shot.
Antioxidants boost nitric oxide production and prevent NO breakdown. Ascorbic acid has direct effects on the bioactivity of NO, and augments NO production in a variety of body processes. The effects are actually synergistic with Vitamin E. Both vitamins are not usually measured, and a reasonable dose of Vitamin C is 500 to 1,000 mg daily. Vitamin E supplementation should be limited to <400 IU per day because of potential adverse long-term health effects of higher doses.
Another common cause of ED for many men is stress. When the body is under stress—either mental or physical—the sympathetic nervous system kicks in, releasing a cascade of stress hormones. Chronic stress leads to elevated levels of these hormones, which can lead to weight gain around the middle, and remember, those excess fat cells convert testosterone to estrogen. Stress also reduces sexual drive and leaves very little physical energy for sex. If chronic stress is a problem, try these supplements:
Physical and emotional stress — whether over-exercising, under-sleeping or just dealing with everyday stressors like work and a busy schedule — causes an increase in “stress hormones,” including cortisol and adrenaline. Stress can lower desire for sex. This is because stress can contribute to fatigue or preoccupation with other tasks. It can also significantly affect blood flow by increasing inflammation.
Cavallini, G., Modenini, F., Vitali, G., & Koverech, A. (2005, November). Acetyl-L-carnitine plus propionyl-L-carnitine improve efficacy of sildenafil in treatment of erectile dysfunction after bilateral nerve-sparing radical retropubic prostatectomy. Urology, 66(5), 1080-5. Retrieved from http://www.sciencedirect.com/science/article/pii/S0090429505006515