However, you might actually be better off going one step back in the chain reaction and taking an L-citrulline supplement. While your body converts L-arginine to nitric oxide, it also metabolizes it too fast when the amino acid is taken in an oral supplement, according to a 2011 study from the University of Foggia in Italy. L-citrulline, which the body converts to L-arginine, is actually a better option to follow the same metabolic pathway and serve as a treatment for ED, the same study found.
Shindel, A. W., Xin, Z.-C., Lin, G., Fandel, T. M., Huang, Y.-C., Banie, L., … Lue, T. F. (2010, February 5). Erectogenic and neurotrophic effects of icariin, a purified extract of horny goat weed (Epimedium spp.) in vitro and in vivo. The Journal of Sexual Medicine, 7(4), 1518-1528. Retrieved from http://onlinelibrary.wiley.com/doi/10.1111/j.1743-6109.2009.01699.x/full
Adequate daily magnesium intake is slightly lower for younger men than for those in their 30s and older. The University of Maryland Medical Center recommends 400 mg daily for men between the ages of 19 and 30, and 420 mg per day for men 31 and older. While these levels are a good general guideline, you should check with your doctor to determine the proper dosage for a daily magnesium supplement, particularly if you’re using magnesium to help treat or prevent erectile problems.
For best results, men with ED take these pills about an hour or two before having sex. The drugs require normal nerve function to the penis. PDE5 inhibitors improve on normal erectile responses helping blood flow into the penis. Use these drugs as directed. About 7 out of 10 men do well and have better erections. Response rates are lower for Diabetics and cancer patients.
When it comes to boosting sexual performance, many men will walk all over God’s green earth looking for ways to maintain a good sex life. Luckily men, all you have to do is walk — not run — 2 miles a day. This, along with other healthier lifestyle interventions can help obese men reduce their risk of ED, or even “reverse” current impotence, according to a 2005 study. This comes of importance, since maintaining a trim waistline is a good defense for ED, as men with a 42-inch waist are 50 percent more likely to have ED than those with a 32-inch waist. Getting to a healthy weight and maintaining it is a good strategy for preventing and treating ED.
This mineral is needed for a healthy sex life and a deficiency is linked to low testosterone levels which contributes to weaker erections. Zinc supplements can significantly improve matters in the bedroom. Food items loaded with Zinc can include oysters, shellfish, nuts and seeds. Erectile dysfunction and loss of interest in sex life can be caused by many physical and psychological reasons. Keep yourself healthy by consuming these vitamins and a healthy diet that is high in fibre and nutrients. Try to ignore OTC medicines like I-Arginine and other pills, and start including these fresh vegetables, apples, oats and whole grains in your daily life. 
However, a recent study that involves yohimbe supplementation to athletes ended with an unsatisfactory result. According to this study, yohimbe did not have any significant effects on body mass, muscle mass and exercise performance even after it was taken for 21 days. Even though it helped burn body fat, it may not be a useful supplement for boosting endurance.9
Minor side effects associated with erectile dysfunction medications include indigestion, runny nose and skin flushes. Sildenafil may cause temporary changes in your vision, and vardenafil may cause muscle aches and back pain. More serious side effects include hearing loss and erections that last longer than four hours. If you have cardiovascular problems, including a history of heart attacks or strokes, high or low blood pressure or vision problems such as retinitis pigmentosa, it may prove unsafe for you to take sildenafil, vardenafil or tadalafil. These medications may also interact poorly with some antibiotics, blood thinners and medications to prevent seizures and heart rhythm disorders.
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.
There are so many potential reasons a man might develop erectile dysfunction (ED), it's nearly impossible to generalize the best ways to treat it. What works for one man may not work for another simply because they are having problems for different reasons. That said, it may encouraging to hear that there are a variety of options that may be considered, from psychological counseling to lifestyle changes, medications to treatments and devices.
While the rationale behind why it would work is airtight, the research on arginine’s actual effect on erectile dysfunction is slim, points out Charles Walker, M.D., assistant professor of urology and cofounder of the Cardiovascular and Sexual Health clinic at Yale University. But given its solid safety profile, minimal side effects, and potential benefit on heart disease, it’s worth a try, he adds, especially when taken in conjunction with other herbs on this list, which studies have shown can be more effective.
The human body only contains 2 or 3 grams of zinc at any given time. Zinc is distributed throughout the body in organs, blood, and bones. It can be difficult to diagnose zinc deficiency. While a low blood zinc level does indicate a deficiency, a normal blood level does not necessarily indicate the absence of a deficiency. And examination of the hair for zinc or a zinc taste test (ZTT) may also be used for supportive evidence in the diagnosis of zinc deficiency.
×