Cortexene Nootropic Erectile dysfunction is the most prevalent type of sexual dysfunction and it affects men of all ages. Also referred to as impotence, erectile dysfunction (ED) occurs when a man experiences difficulties achieving or maintaining erections for pleasurable intercourse. Inhibited or Retarded Ejaculation - Ejaculation occurs too slowly and it is the least common form of sexual dysfunction. It targets not only erection problems but premature ejaculation, stamina, libido, etc. It is involved in the signaling within the body that causes a release of hormones, including testosterone. It also helps the body makeCortexene Nootropic sperm.