Nausea, dizziness, pounding headaches, the inability to do anythi...

Nausea, dizziness, pounding headaches, the inability to do anything but sit here and get thru these wretched side effects from a drug that I was told was non-addictive! What a joke! How can a drug that makes me feel this bad piossiblity be non-addictive! Ive gone cold turkey and this is day 17 that ive been off the effexor. Mind you I had only been taking it for barly 3 months and at a relatively small dosage (1x75mg nightly), and I cant beleive how much trouble Im having trying to come off it. How long does this drug remain in ones body?