Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.


It hits where it hurts the most – your member. Erectile dysfunction or ED is a spoiler in bed and can shatter your ego irreparably. ED, also called impotence, is the inability of a man to achieve and maintain an erection sufficient to permit satisfactory sexual intercourse.1 Men who cannot get or maintain an erection that lasts long enough or is rigid enough to complete sexual intercourse are considered to have erectile dysfunction.
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. [8] Vitamin D supplementation can improve both these parameters. 
In contrast to Chinese ginseng, Korean ginseng is divided into three types, depending on how it is processed. Red Ginseng is harvested at the sixth year of cultivation and is steamed and dried. In addition to the effects mentioned regarding the effects of ginsenoside, red ginseng has been repoted to improve erectile function in a rat model of metabolic syndrome and it was also found to inhibit fibrosis of the corpus cavernosum of the penis (39). As with most herbal medicines, the concentration of ginsenoside are distributed unevenly throughout the ginseng plant and the concentrations in individual supplements can vary. Common side effects include headaches, insomnia, gastric upset, rash and constipation.
Following the breakthrough in ED treatment using PDE5-inhibitors, Western medicine has now moved on to a new frontier of regenerative medicine, with stem cell and gene therapy leading the way (25). There is a practical need for novel therapy as a significant portion of diabetic or post-prostatectomy ED patients do not respond to oral pharmacotherapy. To date, stem cells derived from different sites including adipose tissue-derived stem cells, bone marrow mesenchymal stem cells and muscle-derived stem cells have been investigated using animal models for ED, to study their effects on neural, vascular, endothelial or smooth muscle regeneration (25,26).
Having your current medication checked – if you are taking medication already, it could be that your erection problems are a side effect. Have a doctor check whether this is the cause of your problems and if it is, you might be able to switch medications and then find that your erectile dysfunction goes away completely – or at least improves. Medications that can cause erection problems include:

As one of the world’s top cardiologists, Dr. Joel Kahn has treated thousands of patients using natural and food-based therapies. His goal is to prevent heart attacks, the #1 cause of death for both men and women. In addition to his practice saving lives as a cardiologist, he lectures around the world, appears on Fox News, The Doctors Show and Dr. Phil. Dr. Kahn is also the founder of Green­Space Café, metro Detroit’s first plant-based restaurant and bar, and the author of multiple bestsellers including The Whole Heart Solution and The Plant-Based Solution. Joel Kahn
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Warnings: Keep out of reach of children. Not intended for persons under 18 years of age. Do not use if you are pregnant or nursing or at risk of or being treated for high blood pressure and heart disease. *Disclaimer: The statements appearing on this listing have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease or conditions but rather a dietary supplement intended for nutritional support. Individual results may vary.
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.

The development of PDE5-inhibitors is a clear example of how Western medicine approached the problem of ED differently from Eastern medicine. The erectogenic effect of sildenafil (Viagra®) was discovered by accident when patients undergoing heart clinical trials reported better erections as a side effect after taking sildenafil. This observation led to further elucidation of the NO/cGMP signalling pathway and development of PDE5-inhibitors as a first-line therapy in ED (5).

While generally thought of as a problem affecting only older men, a study published in 2013 found that one in four men with newly diagnosed ED at a clinic in Italy were younger than 40 years old. With other research suggesting over half of all men between the ages of 40 and 70 now suffer from some degree of ED, and estimates showing the total cost of orthodox treatment in the United States could reach $15 billion if all men affected sought treatment, solutions that address the condition’s primary cause are urgently needed.
Wine – especially red wine – is a great source of the antioxidant phytochemical resveratrol, which helps open the arteries by enhancing the production of nitric oxide. Nitric oxide allows the blood vessels to expand, and this is how Viagra works. But while the little blue pill only works on tiny blood vessels, resveratrol helps your main arteries too. Make sure you stop at one or two glasses of wine – too much alcohol leads to the dreaded droop.
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.
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:
The use of penile support device such as penile cast worn externally during intercourse has been tried to provide length and rigidity to the penile shaft (24). Each device can be customised to the patient’s penile size and provided an option for patients who are seeking non-pharmaceutical/non-invasive treatment, or have end-organ failure who may not be candidates for, or unable to afford, penile prosthesis implant.
The article discusses erectile dysfunction (ED) with the special emphasis on epidemiology, as well as the currently available medical treatments. Describing treatment methods authors paid special attention to natural therapies (as Panax ginseng, Tribulus terrestris, Vaccinium macrocarpon), because taking into consideration their safety profile, they appear to be an important alternative to therapies with synthetic molecules. From substances of natural origin, extract from the fruit of Tribulus terrestris ranks itself high on in collation at the end. The results of most clinical trials and experiments clearly demonstrate its effectiveness in improving sexual function in men.
With the advent of the “little blue pill” men’s sexual health has been thrust into the public eye and now, rather than worrying in embarrassed silence about “performance” issues, men are able to openly seek the help they need to function at their best. This is good news for the 30 million American men who suffer from erectile dysfunction or ED.1 And because 70 percent of ED cases are physiological in nature (it’s not just in your head) and often a sign of some other serious health issue, it is wise to address and correct the underlying physical imbalances that are hindering performance in the first place, ensuring both shortterm happiness and long-term health.
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.
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