I don’t think any migraine treatment would come with a guarantee, but for a limited time this site is giving a 6 months guarantee on every purchase through to the end of October of 2010.
Meaning if you purchase the treatment during that time and have not noticed any positive result at the end of six months from the start, you will get your money back.
All I am asking is that you sincerely follow the instructions and use it accordingly. That’s all.