Thanks Sue,
I am taking 4mgs at a time. I found that when I was taking 2mgs I would wake up about 3 hours later and not able to get back to sleep for hours. The headache could very well be from dehydration. I try to drink my usual amount, about 6-8 cups a day, but I might need even more than that if I am taking Zanaflex regularily. Maybe next time I am at the Dr. I will ask her to try a different muscle relaxant.

"In everyone's life, at some time, our inner fire goes out. It is then burst into flame by an encounter with another human being. We should all be thankful for those people who rekindle the inner spirit."
Albert Schweitzer