That advice is no good. The withdrawal is from the last little bit of the Efexor being metabolised really quickly. So, tapering will not help. Instead, overlap your last three Efexor tablets (37.5 or 75 mg, which ever is the lowest you tolerate) And then stop them both, or stay on the Prozac if you prefer. No more withdrawal symptoms at al. The Prozac inhibits the metabolism of the Effexor, you see.