you need to try effexor at your current dose or higher for about 4 to 6 weeks to see whether its going to work for you, lexapro is a different type which could then be tried if the effexor isnt helping
everyone reacts differently to antidepressant meds
i hope your BP meds are the beta blocker type as these are best for anxiety sufferers but sadly many docs dont think of this, they are all out of patent so not much advertised or promoted