Whereas, with all the other ssris, they have a very short
half life, meaning they leave the body very quickly, in a matter of hours. It is believed this is one reason the body has such a hard time adapting to their absence, and withdrawal begins even before you're done tapering off them. Your psychiatrist is the person to discuss this with, but psychiatrists, including, I'm sure, Dr. Gould here, will tell you Prozac doesn't have the same withdrawal problems as other ssris.