Ok, it was a while back and I am sure there are more advances - but yes it's the folic acid from when you start trying and to get your HBA1c in the 6s preferably and then just to have control as good as you can. I went to an appointment with the diabetic nurse who ran through all that - also if you are on a hormonal type pill be careful coming off it, as the hormones trick your body into thinking you are pregnant so you can be a little bit more insulin resistant and when you come off you can have a period of lots of hypos as your insulin requirement drops so take care. They also always want to see you from the moment you are pregnant at my place just so they can start monitoring and helping.