The number of chemicals released by the body during the process are amazing and largely out of control of the conscious mind. The timing and amount of chemicals are critical, and failures of anything to be produced, or imbalances can be disastrous. There are different chemicals involved in every step from initial desire, libido, erection, orgasm, ejaculation, and relaxation. If the chemistry gets out of whack, the process will fail. One reference is at science.howstuffworks.com … HowStuffWorks "The Penis" (not sure if TAM will accept this link, it's innocuous )H is weaning off Paxil. Drive is still an issue; he has a very low one. Also, he now worries about becoming too quick. That hardly happens. In fact, the opposite. He can go forever...sounds better than it is.
Much the same here when taking Fluoxtene (sp) which is similar to Prozac. I definetly need it for managing stress and temperament issues though and because the wife isn't interested in sex, I deal with it.The side effects were reduced libido, ED, and overall dysfunction. I had trouble achieving orgasm, genital numbness