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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.
"Evidence that foods can help with ED is probably related to a vascular connection," says Firouz Daneshgari, MD, professor and chairman of the department of urology at Case Western Reserve University School of Medicine and University Hospitals Case Medical Center in Cleveland. "Erectile problems are usually due to not having a good blood supply to the penis, so foods that are good for your vascular system may also help prevent ED." Should you eat more of the foods containing these key nutrients?
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.
So, what do we see? The daily diet of any vegetarian or vegan includes the sufficient quantities of the above-mentioned foods. Refusing to eat meat and switching to a vegetarian or vegan diet, a man gets a number of advantages in return. Vegetarians and vegans have excess weight more rarely and are less exposed to the risk of cardiovascular diseases. All these factors have a positive effect on the male potency. If you combine adherence to the principles of good food with natural Viagra intake, you will achieve truly amazing results in the ED treatment fast.
Before taking any medication for erectile dysfunction, including over-the-counter supplements and herbal remedies, get your doctor's OK. Medications for erectile dysfunction do not work in all men and might be less effective in certain conditions, such as after prostate surgery or if you have diabetes. Some medications might also be dangerous if you:
As men age, their estrogen levels gradually rise, while testosterone levels fall. Anti-cancer coupounds called indoles can help strike a balance. Cruciferous vegetables like broccoli are rich in indoles, which boost testosterone production by breaking down and flushing the system of excess estrogen, which inhibits the production of male sex hormones. In one study, supplementing with indole-3-carbinol from cruciferous vegetables for just 7 days cut the estrogen hormone estradiol in half for men. Another study found indole supplementation significantly increased urinary excretion of estrogens.
If ED continues to be a problem even after making certain lifestyle changes, talk with your doctor. ED is an uncomfortable subject for many men to discuss, but it’s treatable in most cases, so there’s no reason to avoid getting help. Doctors see patients every day about ED, so you’re simply one of millions of men dealing with this common condition.
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. 
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