This caught my eye and I just wanted to let you know that on the Fibromyalgia board (really not trying to steal your member!!! lol) there is a great thread about Costo. I have it and have gleemed a lot of helpful info from others who have it as well through this thread.
Hope you get to feeling better soon!
Saw your question and thought I would post the link to the fibro thread:
Welcome to the forum bonwagner!