In 2009, a clinical trial was conducted by Kim and fellow scientists to measure the effect of Korean Red Ginseng in men who suffered from erectile dysfunction.The Korean RedGinseng was supplemented in the form of tissue-cultured mountain ginseng extract. 143 males with erectile dysfunction were involved in this trial and were divided into 2 treatment groups.
Pycnogenol is the brand name of a product derived from the bark of a tree known as Pinus Pinaster. It is used for treating circulatory problems, asthma, allergies, high blood pressure, diabetes, women problems and as an anti-ageing supplement. It is acclaimed for its effect in boosting male fertility and is used widely in treatment of erectile dysfunction among men.
Despite the name, horny goat weed actually helps improve your erection, not libido. Botanically known as epimedium, this herb has been used by the Chinese for centuries to treat, among other things, low libido and erectile dysfunction. “A growing body of research shows that isolated icariin—the extract of epimedium—inhibits the enzyme phosphodiesterase-5 (PDE-5) and significantly increases nitric oxide synthase, helping to improve erectile function,” says Fisch. In fact, this is the same mechanism that Viagra works through (but the herb comes with a way better name).
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.