Long considered an aphrodisiac by the Chinese, ginseng may do more than just rev your engine. A 2013 South Korean study found that taking the herb for just a few weeks improved guys’ performance in the bedroom, including helping them last longer before finishing. Meanwhile, a study in Spermatogenesis found that ginseng can also help make for harder, longer-lasting erections and improve testosterone levels, which in turn boosts libido. “Ginseng is a promising herbal therapy for ED because it helps promote relaxation of smooth muscle in the penis, increase dopamine levels in the brain, and increase pressure in the cavernosal nerves of the penis which helps nitric oxide synthesis,” Walker explains.
Taking one of these tablets will not automatically produce an erection. Sexual stimulation is needed first to cause the release of nitric oxide from your penile nerves. These medications amplify that signal, allowing some men to function normally. Oral erectile dysfunction medications are not aphrodisiacs, will not cause excitement and are not needed in men who get normal erections.
When considering vitamin supplementation for erectile dysfunction, one of the first vitamins that you may come across in literature would be Vitamin D. This is a vitamin that can be easily obtained through many types of dairy products like milk, cheese, and yogurt and is also in abundance if you live in a tropical climate. Sunlight is able to give us a natural dose of vitamin D daily.  Although vitamin D is usually associated with improving bone strength and prevention osteoporosis, another valuable feat of vitamin D is the fact that it helps reduce atherosclerosis. Studies confirm that there is a similar underlying mechanism that occurs between conditions like cardiovascular disease and erectile dysfunction. As blood vessels are damaged and filled with plaques, the diameter for blood to flow through is gradually reduced. After a few years, the amount of blood may be reduced substantially. Vitamin D is able to help activate cells that remove some of these dangerous plaques and delay the onset of ED. 
With drug therapy, there’s a risk of side effects such as headaches, back pain or an upset stomach. Before taking any medication for erectile dysfunction it is important to ensure your doctor is ok with that decision. Medication may not work for all men, for instance, if you have diabetes or have previously had prostate surgery. ED medication might also have serious risks if you’re currently taking nitrates (commonly prescribed for chest pain), have heart disease or have low blood pressure.22
Nettle root extracts are known for their ability to restore normal production of important sex hormones, such as testosterone. The primary action of nettle root is linked to its action on the glands that produce testosterone. Nettle root contains serotonin and acetylcholine, both of which directly stimulate testosterone production and boost the functioning of these vital glands.
I lost sensation in the penis after a while and could last for ages in the bedroom as it was desensitized / numb however I stopped getting erections, sorta like erectile dysfunction (this was a problem for 3-4 months even after I stopped), I immediately stopped the extender type traction device, although I have a suspicion i lost feeling as I had the traction on much to high.
Arginine. The amino acid L-arginine, which occurs naturally in food, boosts the body's production of nitric oxide, a compound that facilitates erections by dilating blood vessels in the penis. Studies examining L-arginine's effectiveness against impotence have yielded mixed results. A 1999 trial published in the online journal BJU International found that high doses of L-arginine can help improve sexual function, but only in men with abnormal nitric oxide metabolism, such as that associated with cardiovascular disease. In another study, published in 2003 in the Journal of Sex & Marital Therapy, Bulgarian scientists reported that ED sufferers who took L-arginine along with the pine extract pycnogenol saw major improvements in sexual function with no side effects. Arginine can be helpful, says Geo Espinosa, ND, director of the Integrative Urological Center at NYU Langone Medical Center. Espinosa says that men with known cardiovascular problems should take it only with a doctor's supervision; L-arginine can interact with some medications.
The Institute of Medicine recommends cumulative daily vitamin D intake of 600 international units (IU) for adults between 18 and 70 years of age , and 800 IU for those over 80. A 3oz serving of salmon contains about 450IU, while an 8oz. glass of milk only has about 100IU. Low vitamin D levels may be an independent, potentially modifiable risk for ED, so it’s worth taking Vitamin D supplements for your “D.” However, keep your daily vitamin D supplement intake below 4,000IU, as too much vitamin D can be toxic.
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.
Supplement factsAmount500mg*Serving size: 1 Capsule 500mgServings per container: 1Cordyceps Sinensis 50mgAged Garlic extract 40mgMushroom Extract 40mgCodonopsis 60mg Proprietary Blend 310mg Proprietary Blend: Carthamus, Cinnamon Bark, Ginko Biloba, Red-Berried Weeds, Rehmannia, Tribulus Terrestris extract, Wild Yam extract.Other ingredients:Magnesium stearate, silicon dioxide, Gelatin, Glycerin. *Daily values not established.
Some natural viagra supplements have been shown to increase nitric oxide levels and increase blood flow to the penis. But there are no true natural alternatives to prescription ED medication, like Viagra. But healthy food and (some) vitamins and supplements can improve your overall health and blood flow. And anything that improves blood flow can treat some of the causes of erectile dysfunction (as well as making you healthier).
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Yohimbine: The main component of an African tree bark, yohimbine is probably one of the most problematic of all natural remedies for ED. Some research suggests that yohimbine can improve a type of sexual dysfunction that is linked with a drug used to treat depression. However, studies have linked yohimbine to a number of side effects, which can include anxiety, increased blood pressure, and a fast, irregular heartbeat. Like all natural remedies, yohimbine should only be used after advice and under supervision from a doctor.