"i&#039;ve been taking effexor for about six months. within the first month i was up to 150mg. since then i no longer have depression. i do have some moments of depression but not days/weeks. i do not have any panic attacks anymore! i&#039;m not nearly as nervous as i was before effexor. however, my first week on effexor was hell. i was extremely anxious, teeth chattering, night sweats, buzzing headache. and after months on effexor if i miss one dose i get brain zaps. i&#039;m also having vivid dreams. good dreams and bad ones. this medicine takes time"