Erectile dysfunction, also called impotence, is the inability to achieve and maintain penile erection sufficient for vaginal penetration. Erectile dysfunction is the most common sexual dysfunction in men and may cause stress to both partners, negatively affect the self-esteem/confidence of the man and contribute to other problems in the relationship.

Studies indicate that this health condition is highly prevalent in individuals with cardiovascular disease factors such as diabetes mellitus, hypertension, and other diseases linked with endothelial dysfunction.