I’ve been using this product for 2 months. I’ve been using it as a preventative measure and also have treated one migraine with it. First off, I’ve been getting an average of one migraine per month this year, and they have mostly been high intensity. I started using the migraine stopper mid June. It is now mid August. Since using the product I have had only 1 migraine and it was extremely low in intensity in comparison with my previous migraines. Additionally, as soon as I used the product on the migraine, it turned off and I did not have any after effects such as a migraine hangover, etc. I am absolutely amazed that such a product exists and that it has been able to help me with my migraines. Thank you Dr Adam