"i have just started quetiapine (seroquel) going form 25mg to 75mg now. i was previously using lithium and have gradually reduced it to 250mg, now i do not take it and have replaced with seroquel. i am concerned about the side effects at higher doses and i would like to know if anyone has gone from using lithium to seroquel as a modd stabilsier. i am doing this as i am trying to get pregnant and my doctor has told me that seroquel is a good substitute up to the 2nd trimester of a pregnancy where i would re-introduce lithium."