As of 2015, there is insufficient evidence that any herbal or natural remedies are effective in the treatment of severe erectile dysfunction, according to WebMD. However, there is limited evidence that the use of ginseng or horny goat weed may aid men in getting and maintaining an erection.
Erectile dysfunction is the repeated inability to maintain an erection firm enough for sexual intercourse. Approximately 15 to 25 percent of men who are 65 years old experience chronic erectile dysfunction, according to WebMD. Additional herbal remedies for erectile dysfunction are yohimbe and ginkgo biloba, but the use of these two treatments is discouraged due to negative side effects and lack of efficacy, respectively