In contrast, the SSRIs (Prozac, Paxil, Zoloft and Celexa),
venlafaxine (Effexor)
and mirtazapine (Remeron) averaged about 40%. When subjects were removed who had other probable causes of sexual dysfunction, the results were even better. Wellbutrin's rate dropped to 7% with the other medications dropping to between 23-30%. "
http://depression.about.com/cs/sexualdysfunction/a/bedroomblues.