Yohimbe is an evergreen tree with large, leathery leaves. It is native to the tropical west coast of Africa, from Nigeria to Gabon. Natives in that region have used the inner bark of Yohimbe to treat angina, hypertension, fever, cough and leprosy. It was also smoked or snuffed to attain an altered state of consciousness. Its main use and rumored “power” was that it was an aphrodisiac. Today science recognizes it as a sensual stimulant, but Native Africans also recognized that drinking Yohimbe tea encouraged sexual arousal. It was traded with Europeans and the tales of Yohimbe’s “powers” spread, giving rise for its increased demand by Europeans.
Penile erection is a hemodynamic process involving increased arterial inflow and restricted venous outflow, coordinated with corpus cavernosum and penile arterial smooth muscle relaxation. Any problem in this mechanism results in ED, and its etiology is generally multifactorial (6). Diabetes, hypertension, high serum cholesterol level, peripheral vascular disease and cardiac problems are significantly found together with ED (7). However, vascular reasons predominate in the etiology of ED and it frequently appears along with atherosclerosis (7). It is known that atherosclerotic lesions prevent blood flow into cavernosal tissues resulting in ED (8).
In the 18th century, Spain embraced the Age of Enlightenment, directing the beacons of thought to all endeavors. But while Spain was not as advanced as France, Britain, Germany, or America, its new political thinking led to the revocation of most of the historical rights and privileges of the sub-kingdoms that comprised the Spanish Crown. Those changes, in turn, allowed for the freedom of inquiry that was so needed for medical discovery, among others.
The RigiScan™ portable home monitor recorded nocturnal penile tumescence and rigidity testing. The monitor's quantitative analysis software quantitates various parameters of tumescence and rigidity, which includes the area under the curve over time slept, reported as tumescence activity units and rigidity activity units. The reproducibility and accuracy of this technique have been reported.28 Baseline normal values were used as previously reported,29 Rigidity had to be at least 60% at the base and 50% at the tip and maintained for at least 10 min. At least half of the episodes had to meet these criteria, with a minimum of three or four episodes per night. Tumescence had to achieve a height of 3 cm at the base and 2 cm at the tip.
One of the keys to addressing erectile dysfunction is improving the functioning of the endothelium, which is the inner lining of blood vessels. Wayne Hellstrom, MD, urology professor at Tulane University School of Medicine says keeping endothelium healthy can help you improve erectile functioning. Cardio training helps with this, as does resistance training. Adding weight training to cardio training increases muscle mass and bone strength helps your balance and stability (which can help prevent injuries) and can help lower blood pressure as well. Improved muscle definition can also be great for self-esteem, and that can’t hurt.
Researchers found that this compound, delivering 6mg of yohimbine HCL and 3.25g of L-arginine, significantly improved erectile function in those with mild-to-moderate ED. [15] L-arginine is an amino acid that acts as a precursor to and plays a critical role in nitric oxide production. Yohimbine paired with a compound encouraging nitric oxide production may be the perfect combination for significantly decreasing or eliminating symptoms of erectile dysfunction.
This African tree bark extract sends blood flow to the genitals, said herbalist Ed Smith, a founding member of the American Herbalists Guild, who adds a warning that Yohimbe can cause nervousness and raise already-existing high blood pressure (so avoid taking it if you have heart or kidney disease), and can also negatively interact with antidepressants.
Data from the Florida Sexual History Questionnaire collected at each time period (baseline, 5.4 mg tid and 10.8 mg tid) are presented in Table 6. Three patients (two responders and one nonresponder) did not complete the entire questionnaire for each study period and were excluded from the analyses. Thus, data in the table and statistical analyses are based on the responses of seven responders and eight nonresponders.
Call this the Marvin Gaye of amino acids: L-arginine converts to nitric oxide (NO), a naturally occuring gas that causes blood vessels to relax and facilitate blood flow, helping you get and stay hard. You can find plenty of the nutrient in oysters, but in supplement form, the Mayo Clinic says that 400-6,000 milligrams is the maximum dose. And these are the best foods for arginine!
Penile implants - are generally used if physical damage (like an accident) makes the anatomical parts needed for an erection not work. These are inserted by surgery and can provide a permanent treatment choice if others fail to work. The implants can be semi-rigid or inflatable. They can be pretty expensive and are not usually available on the NHS.
Call this the Marvin Gaye of amino acids: L-arginine converts to nitric oxide (NO), a naturally occuring gas that causes blood vessels to relax and facilitate blood flow, helping you get and stay hard. You can find plenty of the nutrient in oysters, but in supplement form, the Mayo Clinic says that 400-6,000 milligrams is the maximum dose. And these are the best foods for arginine!

The improvements in IIEF-erectile function domain (IIEF-EF) score for moderate and severe ED patients in the niacin group were 3.31 and 5.28 and in the placebo group were 2.74 and 2.65, respectively. In the lower range of mild and mild-to-moderate ED, there was no significant improvement in erectile function. Of the 160 patients in the study, 32 were using statins; 18 in the niacin group and 14 in the placebo group. For patients not receiving statin treatment, there was a significant improvement in IIEF-Q3 scores (0.47) for the niacin group, but not for the placebo group. To summarize, niacin alone can improve the erectile function in patients suffering from moderate to severe ED and dyslipidemia.


Thirty two male rats were randomly assigned to four groups and submitted to one of the following daily treatment regimens: (a) 1 mg of ZnSO4 dissolved in 1 ml of distilled water. (b) 5 mg of ZnSO4 dissolved in 1 ml of distilled water (c) 10 mg of ZnSO4 dissolved in 1 ml of distilled water. Controls were provided with 1 ml of distilled water. Supplementation was done orally using a feeding tube. These daily regimens were continued for two weeks (daily at 17.00 hours) and housed two per cage.

Research suggests that drinking alcohol may play a part in erectile problems. One study that considered the prevalence of ED among people diagnosed with alcohol dependence syndrome found that heavy drinkers were more likely to experience sexual dysfunction. Experts also believe that the depressant effect of alcohol can inhibit sexual response and even suppress libido in some people.
Yes, niacin is good for erectile dysfunction. Vitamin B3 or Niacin acts as a powerful agent to improve the condition of erectile dysfunction and a research study conducted in a medical center of Hong Kong confirmed that Niacin supplementation has resulted in the increase of blood flow across the pelvic region in men. In addition, researchers have further confirmed that the Vitamin comes with the ability to unclog various harmful fats collected in the artery region.
There’s a reason why Casanova developed his reputation: He was alleged to scarf two dozen oysters a day, which is the food highest in zinc. In the modern era, people with higher levels of zinc in their system have been shown to have a higher sex drive than those with lower levels. That’s because the mineral is essential for testosterone production. In one Nutrition study, zinc-deficient men who supplemented with zinc for six months doubled their T levels. And another eight-week trial published results in the Journal of the International Society of Sports Nutrition found that college football players who took a nightly zinc supplement showed increased testosterone levels as well.
Much of the evidence shows high rates of vitamin D deficiency in patients with erectile dysfunction. In fact, one study of 3,400 participants found that men with vitamin D deficiency were 32% more likely to have trouble with erections when all other risk factors were controlled for. It’s a little on the nose that you need vitamin D for your “D,” but hey—science can be funny too.
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