Hi Kleme,
You must mean Cipralex, which is the same as Lexapro.
4 weeks is not enough time to get stabilized, ups and down are to be expected for a while.
You say it works wonders at times, you are responding well. How many mgs are you on?
As for sleeping, depression and medication does that. I wish I could sleep that much, so tired of all those years of merry go rounds.
Keep posting, I'm on cipralex also, I can relate to your state of mind,
Charlie