I was on lamictal too but I don’t recal the specifics. I think it was 200, but as to taking them in a slit dose or all at once? I just put my pills in a box according to instructions and forget about them. I have told my doctors only am and pm as I can’t remember to take pills at other times. I’m trying to take vitamins now with lunch but I keep forgetting. I can’t take them with my morning pills as one is a thyroid medication. Best thing to do is ask your doctor what their preference is.