Using 2 SSRI or SNRI drugs together may lead to Serotonin Syndrome... which can be fatal. That's why your doc wants you to quit the
Effexor now.
But, your doc should warn you that you will probably feel some withdrawal symptoms from the Effexor even while you're taking
Lexapro. Many people think it's a problem with the new drug and stop taking it, but it's actually the drug you stopped that is causing the grief.
Tim
prozackills2002@yahoo.ca