ssri's only block the uptake of seritonin. there are 3 chemicals that influence our brains, the other 2 are dopamine and epinephrin. they are finding out that some folks have a need for more epinephrin. effexor blocks that from being absorbed. prozac stopped working, zoloft makes you like a zombie. effexor you have energy, it's much better. if you have to take one, try that. as far as sex goes. the problem is the drugs actually improve the overall sez experience. more excitement, however there is a disconnect between when you brain sez you are ready and your body is not in the same state. after you realize this you can re-sync or just take viagra. it's a good excuse to give your doctor. " doc, i cant get it up. got any viagra"?