Personally I would change docs. I have been on Lamictal 150 twice a day for the last year and I also have bipolar I. It seems to control me very well. I also took Depakote and did not like it at all.
You need a dr who will listen to you and help you to try new things and find out what works for you.
Good Luck and God Bless
Change Drs. i am type II and taking 300 once a day. It is a great med. My dr. just put me on 300mcg because I became manic over the weekend and then very depress the next day.
i'm on 400mg at bedtime i've been on it for a little over a yr. i have never felt better. It really changed my life after yrs and yrs of changing meds all the time you name it i testing it as well as different dr.s due to diff. ins all the time and diff. states. finally i can say i'm happy and feel better awhole new/diff. person
What kind of Dr are you seeing? A GP or a Psych? Only a psych can give a true BP dx and will have a knowledge of meds to treat BP.