Thanks for your query to HCM..
I read your query and I like to say you that Effexor
have no role in damaging your healthy immnue system .
I suggest you to continue on Efffexor and get consulted for Chest discomfort
Your doctor will help you to prescribe Omez
and antibiotics which will make you to recover to healthy life as before.
Do not be worried , I wish you to get good health sooner.
Hope this information helps you.