I was on Prozac for only 8 day but on the 8th day I experienced most ALL the bad side effects listed! Anxiety, nervousness, chills, cool pale skin, dry mouth, confusion, tiredness, weakness, trembling & shaking, restlessness, drowsiness, loss of appetite, burning in my chest, I thought I was going CRAZY! It was a nightmare! The next day I decided NOT to take it. I was a little shakey in the morning but the rest of the day I felt fine.