Start off on a small mg Iz & you'll be fine. I'm on citalopram - i started off on 5mg, increased to 10mg, then finally 20mg. the small jumps meant the side-effects i had were mild compared to what they can be. sometimes you feel temporarily more depressed and/or anxious, i was light-headed & all 'floaty' for a bit - but it was nothing horrendous. went away within 3 weeks and the effects of being on them definitely outweight a few weeks of uncomfortableness!