I have bad foot or leg cramps at night if I have not hydrated properly during the day.

Are you drinking a lot of non-caffine fluids during the day?

Are you getting enough calcium? Low calcium can cause cramping also.

BTW - I agree with everyone else that you might need to be seen by another set of eyes. You doc is probably great, but sometimes we and our docs get to close to the problem and we start treating symptoms and side affects instead of taking a step back and looking at the big picture.

Good luck!