If the ZOLOFT(sertraline hydrochloride) worked for you in the past I would definitely talk to your physician about returning to it.
There are many members that like the Effexor and if you read through the topics or search for Effexor in Search Site above you will find threads about the med.
Take care and I am glad you have posted your question as it is wise to know your medications.
Moderator Anxiety ~ Panic Disorders
*~* Not a mental health professional at all *~*
Dx: Anxiety/Panic, Depression
"If you doubt you can accomplish something, then you can’t accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”