F/O had the same problem due to stress following berevement.
Tried the conventional drug route using peppermint capsules and colofac tablets. It was suggested to me to try extra strong mints, rots the teeth but can help, also aloae vera juice or capsules from the health food shop.
It has worked for me over the past two and a half years. I only start on the juice when an attack starts. The advantage is that it is a natural substance and will not affect your conscious state.
For the stress part, I tried counselling but that was for a specific reason.
Hope this is of help.
