I Take Effexor For Social Phobia. A Few Times I have Tried To Quit, Or Have Just Simply Run Out. By Day 5 I Feel Like Im Dying. My Muscles Ache, I Have Stomach Upset, Headache, Dizziness, Fatigue, Light Headedness. I Really Want To Go Off The And Try Somthing Else, As They Really Dont Work. But With School And Different Things, I Just Cant\' Afford To Take Time Off While I Go through The Withdrawal. It Is The Most Cruel And Painful I Have Every Put Myself Through In My Life.