According to the Cleveland Clinic, “because erectile dysfunction is caused by a complex set of psychosocial, neurologic, and vascular factors, a specific cause in a patient may remain ambiguous.” The root causes are often related to a blockage or dysfunction of blood vessels. For example, ED can be due to conditions like atherosclerosis or diabetes, hormonal imbalances or problems related to mental health. It’s been found that common causes typically include one or more of the following factors: (2)
The search for a cure for erectile dysfunction (ED) dates back way before the introduction of Viagra in the 1990s. Natural aphrodisiacs, from ground rhinoceros horn topa chocolate, have long been used to increase libido, potency, or sexual pleasure. These natural remedies are also popular because they’re said to have fewer side effects than prescribed medications.
Consider this:  penicillin, the first successful antibiotic, was derived from molds that inhibit bacterial growth.  Scientists had to figure out why the molds slowed bacteria, and refine the active ingredients.  Using herbal supplements is somewhat like putting mold on a wound.  It might help, a little, but it’s certainly not going to help as much as using penicillin.
The study was conducted between April 2000 and March 2003 in western Uganda. To collect this data indirect asking of questions and investigations that do not refer or offend anyone were used since nobody especially men can say openly that they have this problem. These methods are explained in the textbook of ethnobotany and others have been used in the field for this kind of studies in Uganda and elsewhere in the world10,12,13,14,21. These methods included visiting the traditional healers to document the indigenous knowledge (IK), regarding medicinal plants used, gender and socio-cultural aspects and where the plants are harvested. Informal and formal conversations, discussions and interviews, market surveys and field visits were conducted.
In one study, men with a Vitamin D deficiency were nearly 33% more likely to have ED. But you don’t need that much sun exposure to get a healthy amount of Vitamin D. As little as 15–20 minutes a day is enough. Taking Vitamin D is a good idea, especially if you are over 65. Vitamin D can also help if you’re obese or dark-skinned (dark skin limits the amount of Vitamin D you naturally, produce)
Yohimbe A number of clinical trials have shown that the primary component of this bark from an African tree can improve sexual dysfunction associated with selective-serotonin reuptake inhibitors (SSRIs) used to treat depression. This herb has been linked to a number of side effects, including increased blood pressure, fast or irregular heartbeat, and anxiety. Yohimbe shouldn't be used without a doctor's supervision.