I stopped taking Effexor XR 450mg 13 days ago with no withdrawal symptoms other than being tired but was tired when taking it. My counselor of 3.5 years left that state and the her office had no one who was experienced in severe PTSD, panic attacks, high anxiety due being hospital Chaplain (pediatrics) for 24 years, responder with Red Cross for 9/11, Katrina, Alabama tornadoes and air plane crash. To much death. Couldn’t find anyone qualified/willing to accept Medicare as I’m on percent disability. My question is when do the symptoms begin? Is it possible not to have any.