I'm on 200 mg 3 x a day. My blood pressure before taking them was 160/110 but now its 117/74. I'm also followed up by a Cardiologist due to pre eclampsia in previous pregnancies, my cardiologist said that he wants it 3 x a day so that there is not a rise in bp in the middle of the day. The first few days I took it I felt awful but now I've got used to it and feel alot better. Even morning sickness has calmed down but in the last few days I've started with all night sickness.